Grade 9
Friday, February 20, 2026
REVISION- 1.COMPUTER SYSTEM
Topic 1.1: Understanding of Natural and Artificial Systems
1.1.1: Differentiate between natural and artificial systems with real-world examples.
Topic 1.2: Computational Architecture
1.2.1: Define various input and output devices, including keyboards, touchscreen, pointing devices, biometric scanners, sensors, recognition systems, audio devices, display screens, printers, plotters, cutters, and actuators.
1.2.2: Identify the use of types of sensors, i.e., temperature, moisture, light, infra-red, pressure, sound/acoustic, gas and pH.
1.2.3: Describe primary and secondary storage devices based on location, cost, capacity, access time, data processing method, and storage technology such as semiconductor (SSD), magnetic (HDD), and optical.
1.2.4: Illustrate the Von Neumann Architecture using a block diagram.
1.2.5: Illustrate the system bus and its types, including data bus, address bus and control bus, along with their roles in computer architecture using a diagram.
Topic 1.3: Memory Measurement Units
1.3.1: Distinguish among the memory measuring units such as bits, bytes, kilobytes, megabytes, and gigabytes in computer memory.
1.3.2: Compare the types of primary memory, i.e., Random Access Memory (RAM) and Read Only Memory (ROM).
Topic 1.4: Software and Hardware Engineering
1.4.1: Differentiate between software engineering and hardware engineering, based on their roles, significance, and applications in computer science.
Topic 1.5: Computer Software
1.5.1: Compare system software and application software, highlighting their roles in a computer system.
1.5.2: Explain the following types of system software:
a. operating system
b. device drivers
c. utility programs
d. language processors
1.5.3: Describe the purpose of the following application software:
a. word processor
b. spreadsheet
c. database management
d. presentation/desktop publication
e. communication
f. entertainment
1.5.4: Distinguish between open-source, shareware, and freeware software based on their licensing, accessibility, cost, and usage limitations.
Topic 1.6: Programming Languages
1.6.1: Describe characteristics, significance, and generation of programming languages.
1.6.2: Classify programming languages into low-level (machine and assembly) and high-level (procedural and object-oriented) languages.
1.6.3: Describe the following types of language translators:
a. compilers
b. interpreter
c. assembler
Topic 1.7: Data Communication
1.7.1: Describe data communication and its components, i.e., sender, message, medium, protocol and receiver.
1.7.2: Describe the modes of network communication, i.e., simplex, half duplex and full duplex.
1.7.3: Differentiate between the synchronous and asynchronous data transmission methods.
Topic 1.8: Communication Devices
1.8.1: Explain the following communication devices:
a. hub
b. modem
c. switch
d. router
e. gateway
1.8.2: Explain structure and functionality of network architecture and its types, including client-server, peer-to-peer, and point-to-point.
Topic 1.9: Computer Networks
1.9.1: Explain computer networks and their uses in different fields.
1.9.2: Explain different types of computer networks, i.e., Local Area Network (LAN), Wide Area Network (WAN), and Metropolitan Area Network (MAN), highlighting their characteristics and applications.
1.9.3: Explain guided media and unguided media.
1.9.4: Explain the following network topologies emphasizing their structure, functionality, advantages, and disadvantages:
a. bus topology
b. ring topology
c. tree topology
d. star topology
e. mesh topology
Topic 1.10: Packet Switching and Circuit Switching
1.10.1: Explain packet switching and circuit switching.
Topic 1.11: Data Communication Standards
1.11.1: Explain the following data communication protocols highlighting their functions and significance:
a. Transmission Control Protocol/ Internet Protocol (TCP/IP)
b. Hypertext Transfer Protocol (HTTP)
c. File Transfer Protocol (FTP)
Topic 1.12: OSI Model
1.12.1: Explain the purpose and functions of OSI model and its following seven layers:
a. layer 7 Application layer
b. layer 6 Presentation layer
c. layer 5 Session layer
d. layer 4 Transport layer
e. layer 3 Network layer
f. layer 2 Data Link layer
g. layer 1 Physical layer
Topic 1.13: The Internet
1.13.1: Trace the evolution of the internet.
1.13.2: Discuss the advantages and disadvantages of the internet, considering its impact on communication, education and society.
Wednesday, February 11, 2026
Entrepreneurship in the Digital Age
7.1 Exploring Entrepreneurship in the Digital Age
7.1.1 Explain entrepreneurship and its importance in the economy.
7.1.2 Explore famous entrepreneurs and their success stories.
7.2 The Digital Landscape
7.2.1 Explain market trends, consumer needs, and emerging industries.
7.2.2 Apply various idea generation techniques to identify business opportunities.
7.2.3 Analyse the components of a Business Model Canvas (BMC).
7.2.4 Design business models using the Business Model Canvas (BMC).
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7.1 Exploring Entrepreneurship in the Digital Age
7.1.1 Explain entrepreneurship and its importance in the economy.
✅ What is Entrepreneurship?
Entrepreneurship means starting a new business using your own idea to earn profit.
A person who starts and manages a business is called an entrepreneur.
An entrepreneur:
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Thinks of a new idea 💡
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Takes risk
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Invests money and time
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Tries to earn profit
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Solves people’s problems
✅ Example of Entrepreneurship
If a student notices that classmates need affordable study notes, and starts selling printed notes at low price, that student becomes an entrepreneur.
If someone creates a mobile app for online tutoring, that is also entrepreneurship.
✅ Types of Entrepreneurship
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Small Business Entrepreneurship
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Small shops
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Home bakery
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Tuition center
-
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Digital Entrepreneurship
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Online store
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YouTube channel
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Freelancing
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App development
-
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Social Entrepreneurship
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Business that helps society
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Example: Company that makes eco-friendly bags to reduce plastic
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✅ Importance of Entrepreneurship in the Economy
Entrepreneurship is very important for a country.
1️⃣ Creates Jobs
When businesses grow, they hire workers.
Example:
A clothing brand hires:
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Designer
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Tailor
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Delivery person
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Social media manager
This reduces unemployment.
2️⃣ Increases National Income
Businesses produce goods and services.
When people buy them, money moves in the economy.
More businesses = more income = stronger economy.
3️⃣ Encourages Innovation
Entrepreneurs bring new ideas.
Example:
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Foodpanda changed food delivery.
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Online banking changed payment systems.
4️⃣ Improves Standard of Living
When people earn more money, they:
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Buy better products
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Get better education
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Live better lives
5️⃣ Promotes Competition
When many businesses exist, they compete.
Competition improves:
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Quality
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Price
-
Customer service
7.1.2 Explore famous entrepreneurs and their success stories.
✅ What Can We Learn From Entrepreneurs?
Successful entrepreneurs:
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Worked hard
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Faced failure
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Did not give up
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Took risks
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Used technology
1️⃣ Bill Gates (Microsoft)
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Loved computers from childhood.
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Started Microsoft.
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Made Windows software.
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Helped computers reach homes and offices.
🔹 Lesson: Follow your passion.
2️⃣ Steve Jobs (Apple)
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Started Apple company.
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Created iPhone, iPad, MacBook.
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Focused on design and innovation.
🔹 Lesson: Think differently.
3️⃣ Jack Ma (Alibaba)
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Failed many times.
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Rejected from jobs.
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Started Alibaba (online shopping platform).
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Became billionaire.
🔹 Lesson: Failure is part of success.
4️⃣ Pakistani Example – Airlift / Bykea / Careem
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Used mobile apps.
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Solved transport and delivery problems.
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Used digital technology.
🔹 Lesson: Technology creates new business opportunities.
7.2 The Digital Landscape
7.2.1 Explain market trends, consumer needs, and emerging industries.
✅ 1. Market Trends
Market trend means what is becoming popular in the market over time.
Trends change with:
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Technology
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Fashion
-
Customer behavior
Examples:
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Online shopping is increasing.
-
Digital payments are replacing cash.
-
Healthy food is becoming popular.
Businesses must follow trends to survive.
✅ 2. Consumer Needs
Consumers are customers.
Consumer needs are:
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What customers want
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What problems they want solved
Types of Consumer Needs:
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Basic Needs – Food, clothes, shelter
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Comfort Needs – Fast delivery, easy payment
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Emotional Needs – Brand trust, good service
👉 Example:
Students need affordable internet packages for online study.
✅ 3. Emerging Industries
Emerging industries are new and growing industries.
Because of technology, many new industries are growing:
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E-commerce (Daraz)
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Digital marketing
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Freelancing (Fiverr, Upwork)
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Artificial Intelligence
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Online education
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Content creation (YouTube, TikTok)
These industries create many new job opportunities.
7.2.2 Apply various idea generation techniques to identify business opportunities.
To start a business, we need a good idea.
✅ 1. Brainstorming
Think of many ideas freely.
Write all ideas without judging.
Example:
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Selling snacks
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Online tutoring
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Graphic designing
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Handmade crafts
✅ 2. Identify Problems
Every business solves a problem.
Ask:
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What problem do people face?
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How can I solve it?
Example:
Students cannot find affordable notes → Start selling notes online.
✅ 3. Study Market Trends
Observe what is popular.
Example:
If skincare products are trending → Start organic skincare business.
✅ 4. Improve Existing Products
Take an old product and make it better.
Example:
Instead of normal water bottles → Sell temperature-control bottles.
✅ 5. Survey Customers
Ask people:
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What do you need?
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What problems do you face?
Their answers can give business ideas.
7.2.3 Analyse the components of a Business Model Canvas (BMC).
Business Model Canvas is a planning tool that explains how a business works.
It has 9 building blocks.
1️⃣ Customer Segments
Who will buy your product?
Example:
Teenagers, working women, students.
2️⃣ Value Proposition
What special value are you giving?
Example:
Affordable, high-quality school bags.
3️⃣ Channels
How will you sell?
Example:
Instagram, website, shop.
4️⃣ Customer Relationships
How will you keep customers happy?
Example:
Fast replies, discounts, loyalty cards.
5️⃣ Revenue Streams
How will you earn money?
Example:
Selling products, subscription fees.
6️⃣ Key Resources
What do you need?
Example:
Money, machine, staff, website.
7️⃣ Key Activities
What work will you do daily?
Example:
Manufacturing, marketing, delivery.
8️⃣ Key Partners
Who will help you?
Example:
Suppliers, delivery companies.
9️⃣ Cost Structure
What are your expenses?
Example:
Rent, salaries, electricity.
7.2.4 Design business models using the Business Model Canvas (BMC).
Let’s design a simple business.
Example: Online Study Notes Business
Customer Segments:
Grade 9 and 10 students.
Value Proposition:
Affordable, easy-to-understand notes.
Channels:
WhatsApp, Instagram, Google Drive.
Customer Relationship:
Quick response, free sample notes.
Revenue Streams:
Selling PDF notes.
Key Resources:
Laptop, internet, printer.
Key Activities:
Writing notes, marketing, sending PDFs.
Key Partners:
Printing shop, internet provider.
Cost Structure:
Printing cost, internet bill.
Tuesday, February 3, 2026
Chapter 4: Data and Analysis (Simple Explanation)
4.1 Scope of Data Science
What is Data Science? (Big Picture)
Data Science is all about using data to understand problems, find patterns, and make better decisions.
👉 Example:
Schools use data to check student results
YouTube uses data to suggest videos
Shops use data to know what people like to buy
4.1.1 Key Concepts of Data Science
a. Data Science
Data Science is a field that collects, studies, and analyzes data to solve real-life problems using computers.
📌 Example:
Netflix studies your watching data to recommend movies.
b. Data and Dataset
Data: Raw facts or information
Dataset: A collection of related data
📌 Example:
Marks of one student → Data
Marks of whole class in a table → Dataset
c. Data Analysis
Data analysis means studying data to find useful information or patterns.
📌 Example:
Teacher checks test results to see which topic students found difficult.
d. Statistics and Probability
Statistics: Used to summarize and understand data
Probability: Used to predict chances of events
📌 Example:
Average marks = Statistics
Chance of rain tomorrow = Probability
e. Mathematics
Mathematics helps in calculations, formulas, and problem-solving in data science.
📌 Example:
Calculating percentages, averages, graphs, etc.
f. Machine Learning
Machine learning allows computers to learn from data and improve automatically without being programmed again and again.
📌 Example:
Google Maps learns traffic patterns and shows fastest routes.
g. Deep Learning
Deep learning is a more advanced type of machine learning that works like the human brain.
📌 Example:
Face recognition in mobile phones.
h. Data Mining
Data mining means finding hidden patterns from large amounts of data.
📌 Example:
Shopping apps find what products are often bought together.
i. Data Visualization
Data visualization means showing data using charts, graphs, and diagrams so it is easy to understand.
📌 Example:
Pie chart showing favorite subjects of students.
j. Big Data
Big data refers to very large and complex data that normal computers cannot handle easily.
📌 Example:
Data from Facebook, YouTube, and Google searches.
k. Predictive Model
A predictive model uses past data to predict future outcomes.
📌 Example:
Predicting exam results based on previous performance.
l. Natural Language Processing (NLP)
NLP helps computers understand human language.
📌 Example:
Voice assistants (Siri, Google Assistant)
Chatbots
m. Image Processing
Image processing allows computers to analyze and understand images.
📌 Example:
Medical X-ray analysis
Camera face detection
4.1.2 Scope and Applications of Data Science
Data Science is used in many fields:
✔ Education – Student performance analysis
✔ Healthcare – Disease prediction
✔ Business – Customer behavior analysis
✔ Banking – Fraud detection
✔ Sports – Player performance analysis
👉 Scope means data science has a wide future and many job opportunities.
4.2 Data Types, Data Collection, and Data Storage
4.2.1 Concept of Data and Its Types
Data
Data is any information that can be recorded.
Types of Data
1. Qualitative Data
Descriptive data
Cannot be measured in numbers
📌 Example:
Color
Name
Opinion
2. Quantitative Data
Numerical data
Can be measured
📌 Example:
Age
Height
Marks
👉 Importance:
Both types help us understand people, behavior, and situations.
Types of Data (Detailed & Student-Friendly Explanation)
1. Qualitative Data (Data in Words)
Qualitative data is the type of data that describes something.
It tells us “what kind?”, not “how much?”
👉 Very important idea for students:
Qualitative data is about quality, not quantity.
It tells us “what kind?”, not “how much?”
Qualitative data is about quality, not quantity.
Why can’t qualitative data be measured in numbers?
Because:
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It does not have size, amount, or value
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It cannot be added, divided, or averaged
Let’s understand with examples 👇
It does not have size, amount, or value
It cannot be added, divided, or averaged
Example 1: Color
Colors tell us what something looks like, not how much it is.
❌ You cannot say:
-
Blue = 5
-
Red + Green = 10
✔ You can only name or describe colors:
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Red
-
Blue
-
Black
So, color is qualitative, not numerical.
Blue = 5
Red + Green = 10
Red
Blue
Black
Example 2: Name
A name is an identity, not a quantity.
❌ You cannot measure:
-
Ali = 10
-
Ahmed = 20
✔ You can only identify a person by name.
So, names cannot be measured, only written or spoken.
Ali = 10
Ahmed = 20
Example 3: Opinion
Opinions show feelings or thoughts.
Example:
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“This subject is easy.”
-
“I like computer science.”
❌ You cannot measure feelings with a ruler or calculator.
✔ Opinions are expressed in words, not numbers.
👉 That’s why color, name, and opinion are qualitative data.
“This subject is easy.”
“I like computer science.”
Easy Trick for Students to Remember
👉 If data answers “What kind?” or “Which type?” → Qualitative
2. Quantitative Data (Data in Numbers)
Quantitative data is data that can be counted or measured.
It answers:
-
How much?
-
How many?
-
How tall?
-
How old?
How much?
How many?
How tall?
How old?
Why quantitative data CAN be measured?
Because:
-
It has numbers
-
It can be calculated
-
It can be compared
Let’s see examples 👇
It has numbers
It can be calculated
It can be compared
Example 1: Age
Age is a number.
✔ You can say:
-
14 years
-
15 years
✔ You can compare:
-
15 is greater than 14
✔ You can calculate:
-
Average age of class
So, age is quantitative data.
14 years
15 years
15 is greater than 14
Average age of class
Example 2: Height
Height is measured using units.
✔ Examples:
-
150 cm
-
5.5 feet
✔ You can:
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Measure it
-
Compare it
-
Find tallest student
So, height is quantitative.
150 cm
5.5 feet
Measure it
Compare it
Find tallest student
Example 3: Marks
Marks are numbers.
✔ Examples:
-
75 marks
-
90 marks
✔ You can:
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Add marks
-
Find percentage
-
Calculate average
So, marks are quantitative data.
75 marks
90 marks
Add marks
Find percentage
Calculate average
Easy Trick for Students to Remember
👉 If data answers “How much?” or “How many?” → Quantitative
Why Both Types of Data Are Important
Explain this part clearly—it’s exam gold ⭐
-
Qualitative data helps us understand qualities and opinions
-
Quantitative data helps us measure, compare, and calculate
📌 Real-life example (Classroom):
-
Teacher asks students favorite subject → Qualitative
-
Teacher checks marks in exam → Quantitative
📌 Another example (School):
-
School uniform color → Qualitative
-
Number of students → Quantitative
👉 Both together give complete information.
Qualitative data helps us understand qualities and opinions
Quantitative data helps us measure, compare, and calculate
Teacher asks students favorite subject → Qualitative
Teacher checks marks in exam → Quantitative
School uniform color → Qualitative
Number of students → Quantitative
4.2.2 Data Collection Process
Data collection means gathering data from different sources.
a. Websites
Data is collected from online platforms.
📌 Example:
Online surveys, social media data.
b. Sensors
Sensors collect data automatically.
📌 Example:
Temperature sensors
Speed sensors
Smart watches
c. Surveys
Questions are asked to collect opinions.
📌 Example:
School feedback forms.
Ethical Considerations
✔ Take permission
✔ Do not misuse data
✔ Protect privacy
📌 Example:
Apps should not steal personal information.
4.3 Big Data and Applications of Big Data in Business
What is Big Data? (Student Language)
Big Data means a very large amount of data that is:
-
too big,
-
too fast,
-
and too different
👉 It cannot be handled easily by a normal computer.
📌 Simple example for students:
One student’s marks = normal data
Marks of millions of students across countries = Big Data
too big,
too fast,
and too different
One student’s marks = normal data
Marks of millions of students across countries = Big Data
Why is it called “BIG” Data?
Because this data:
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comes from many sources
-
comes every second
-
is in different forms
Example sources:
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Mobile phones
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Social media
-
Online shopping
-
Sensors
-
Government records
comes from many sources
comes every second
is in different forms
Mobile phones
Social media
Online shopping
Sensors
Government records
3 Vs of Big Data (MOST IMPORTANT CONCEPT)
Explain this slowly. Tell students:
👉 Big Data is big because of 3 reasons (3 Vs)
👉 Big Data is big because of 3 reasons (3 Vs)
1. Volume (Amount of Data)
Volume means how much data there is.
📌 Example:
-
One photo = small data
-
Millions of photos uploaded on Instagram daily = big volume
👉 Normal computers cannot store such huge data easily.
One photo = small data
Millions of photos uploaded on Instagram daily = big volume
2. Velocity (Speed of Data)
Velocity means how fast data is generated.
📌 Example:
-
WhatsApp messages sent every second
-
Live cricket scores updating instantly
👉 Data is coming very fast, so systems must work quickly.
WhatsApp messages sent every second
Live cricket scores updating instantly
3. Variety (Different Types of Data)
Variety means different forms of data.
📌 Examples:
-
Text (messages, posts)
-
Images (photos)
-
Videos
-
Audio
-
Numbers (marks, prices)
👉 All these together make data complex.
Text (messages, posts)
Images (photos)
Videos
Audio
Numbers (marks, prices)
Easy Memory Trick for Students
👉 Big Data = Volume + Velocity + Variety
What is Big Data Analytics?
Big Data Analytics means:
Studying big data to find useful information and make better decisions.
📌 Example:
-
Amazon studies what you search and buy
-
Then suggests products you may like
👉 Without analytics, big data is useless.
Studying big data to find useful information and make better decisions.
Amazon studies what you search and buy
Then suggests products you may like
Data Visualization and Interpretation
Data Visualization
Showing data using:
-
Graphs
-
Charts
-
Diagrams
📌 Example:
Sales shown in a bar graph.
Graphs
Charts
Diagrams
Sales shown in a bar graph.
Data Interpretation
Understanding what the data is telling us.
📌 Example:
Graph shows sales increased → Business is growing.
👉 Visualization helps us see,
👉 Interpretation helps us understand.
Graph shows sales increased → Business is growing.
👉 Interpretation helps us understand.
Big Data Challenges in Business
Explain this as “problems businesses face”.
1. Data Security
Risk of data theft or hacking.
📌 Example:
Customer bank details stolen.
Customer bank details stolen.
2. Privacy Issues
Using data without permission is wrong.
📌 Example:
Selling user data without consent.
Selling user data without consent.
3. High Cost
Storing and processing big data is expensive.
4. Data Management
Handling too much data is difficult.
Applications of Big Data in Business
Now students see WHY businesses use it.
a. Healthcare
Big data helps in:
-
Disease prediction
-
Patient records
-
Medical research
📌 Example:
Hospitals analyze patient data to predict diseases early.
Disease prediction
Patient records
Medical research
Hospitals analyze patient data to predict diseases early.
b. Internet of Things (IoT)
IoT devices collect data using sensors.
📌 Examples:
-
Smart watches
-
Smart homes
-
Traffic sensors
👉 Data is used to improve comfort and safety.
Smart watches
Smart homes
Traffic sensors
c. Manufacturing
Big data helps factories:
-
Detect machine problems early
-
Improve product quality
📌 Example:
Sensors warn before machine breakdown.
Detect machine problems early
Improve product quality
Sensors warn before machine breakdown.
d. Government
Big data helps government:
-
Manage traffic
-
Plan cities
-
Control crime
-
Conduct census
📌 Example:
Smart city systems.
Manage traffic
Plan cities
Control crime
Conduct census
Smart city systems.
Why Big Data Is Important (Student Logic)
Explain clearly:
-
Small data → Simple decisions
-
Big data → Smart and accurate decisions
👉 Businesses that use big data:
✔ Understand customers
✔ Reduce loss
✔ Increase profit
Small data → Simple decisions
Big data → Smart and accurate decisions
✔ Understand customers
✔ Reduce loss
✔ Increase profit
4.3.1 Big Data Concepts
a. Big Data
Big data is huge data generated every second from different sources.
b. 3 Vs of Big Data
Volume – Large amount of data
Velocity – Speed of data generation
Variety – Different types of data (text, images, videos)
📌 Example:
Social media posts.
c. Big Data Analytics
Big data analytics means analyzing big data to make smart decisions.
📌 Example:
Amazon suggests products based on your searches.
d. Data Visualization and Interpretation
Visualization = graphs and charts
Interpretation = understanding what data shows
📌 Example:
Sales chart shows profit increase.
4.3.2 Big Data Challenges in Business
❌ Data security
❌ High cost
❌ Privacy issues
❌ Data management
4.3.3 Applications of Big Data in Business
a. Healthcare
Disease prediction
Patient monitoring
📌 Example:
Tracking patient health records.
b. Internet of Things (IoT)
Devices connected to internet collect data.
📌 Example:
Smart homes, smart watches.
c. Manufacturing
Quality control
Predict machine failure
📌 Example:
Factories use sensors to avoid breakdowns.
d. Government
Traffic control
Crime analysis
Census data
📌 Example:
Smart city systems.
Unit 4: Data and Analysis-SLO
4.1 Scope of Data Science
4.1.1 Explain the following key concepts of data science:
a. data science
b. data and dataset
c. data analysis
d. statistics and probability
e. mathematics
f. machine learning
g. deep learning
h. data mining
i. data visualization
j. big data
k. predictive model
l. natural language processing (NLP)
m. image processing
4.1.2 Discuss the scope and application of data science.
4.2 Data Types, Data Collection, and Data Storage
Student Learning Outcomes Students should be able to:
4.2.1 Explain the concept of data and its types (qualitative and quantitative) emphasizing their characteristics and importance.
4.2.2 Evaluate the process of data collection using websites, sensors, and surveys, highlighting its significance and ethical considerations through real-world examples.
4.3 Big Data and Applications of Big Data in Real World Business
Student Learning Outcomes Students should be able to:
4.3.1 Describe the following concepts of big data within the context of technology and society:
a. big data
b. 3 Vs of big data
c. big data analytics
d. data visualization and interpretation
4.3.2 Describe big data challenges in business.
4.3.3 Explain the application of big data in the following business domains:
a. healthcare
b. internet of things (IoT)
c. manufacturing
d. government
