Page 67 - CT_AI_Class-7

21 st
think & apply Century #Critical Thinking
Skills
1. Sarah wears a smartwatch that tracks the number of steps she takes every day as part of her fitness
routine. What type of data collection method is being used?

2. Rahul takes a photo of the sunset with his phone. When he zooms in on the picture, he notices tiny dots
that make up the image. What are these tiny pieces that form the image?

3. You are designing a photo gallery app for a photography business. You want users to upload and view
high-quality images easily. What file format would you use to store the images?
4. You are analysing sales data for a clothing store that has been struggling with sales in recent months.
To understand the trends and make better decisions, what process would you use to interpret
the data?

5. You are using an AI model to predict the prices of items in an online store. The model consistently
predicts `15.50, but the actual price is `18.00. How would you describe the model’s predictions?

21 st
Century #Creativity
Skills
1. Using Microsoft Excel, enter a set of data presenting students marks in different subject such as

LAB English, Hindi, Mathematics, SST. Then, create a bar chart to represent the data visually.
2. Download two photos from Google or any image website of your choice. Save them to your
computer or device. Next, open Microsoft Excel and create a table that includes the following
information about each photo: File Name, File Size (in KB or MB), Resolution (Width x Height),
Date Taken.

cbse handbook questions
A. Multiple Choice Questions.
1. Which of the following is an example of structured data?

a) Social media posts b) Audio recordings

c) Student marks in a table d) Videos

2. Which method of data collection involves carefully watching and recording information?

a) Survey b) Measurement

c) Observation d) Digital collection

3. Which type of graph is best used to show changes over time?

a) Pie chart b) Line graph

c) Bar chart d) Table

Data Visualisation and Analysis 65