Practice Primary Data (1.1) - Chapter 4 : Statistics - CBSE Class 9 Maths
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Primary Data

Practice - Primary Data

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define primary data.

💡 Hint: Think about who collects the data and for what purpose.

Question 2 Easy

List one method of collecting primary data.

💡 Hint: Consider methods where you directly interact with people.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is primary data?

Data collected first by someone else
Data collected for the first time by the investigator
Data that already exists

💡 Hint: Think about who collects the data for their own needs.

Question 2

True or False: A histogram has spaces between the bars.

True
False

💡 Hint: Remember how a bar graph looks compared to a histogram.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A researcher collected data on daily exercise hours for 15 participants. The data is: 1, 2, 2, 3, 3, 4, 4, 5, 5, 5, 6, 7, 8, 10, 10. Find the mean, median, and mode of this dataset.

💡 Hint: Use the formulas for mean and median, and count how often each number appears for mode.

Challenge 2 Hard

Create a frequency distribution table from the following test scores: 34, 45, 23, 45, 56, 78, 89, 67, 45, 50, 56, 56, 91, 82, 45. Use intervals of 10 for your table.

💡 Hint: Group scores into ranges and count occurrences for each range.

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Reference links

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