Practice Summary - 7.8 | 7. Statistics | CBSE 9 AI (Artificial Intelligence)
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Summary

7.8 - Summary

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define qualitative data with an example.

💡 Hint: Think about labels or categories.

Question 2 Easy

What is primary data?

💡 Hint: Consider who collected the data.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What type of data includes categories or labels?

Qualitative
Quantitative
Both

💡 Hint: Think about data types.

Question 2

True or False: Mean, median, and mode are all measures of central tendency.

True
False

💡 Hint: Recall the data summary techniques.

3 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Analyze a dataset of school exam scores: [45, 70, 55, 80, 50, 95]. Calculate the mean, median, and mode.

💡 Hint: Calculate the mean first, then sort the data for the median.

Challenge 2 Hard

Create a pie chart representation of voter preferences: [30% for candidate A, 45% for candidate B, 25% for candidate C]. Explain what insights could be drawn.

💡 Hint: Visualize proportions clearly for effective communication.

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