Statistics — sample questions with answers.

4559 verified statistics questions sit in the bank for this chapter alone. Here are 4 of them, worked; a free account gets a full, board-pattern paper across whichever chapters you pick.

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1 mark Assertion–Reason

Assertion (A): If the largest of the observations

is replaced by

, the mean changes but the median does not.
Reason (R): The mean uses the value of every observation, whereas the median uses only the order in which the observations lie.

(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).	(B) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
(C) Assertion (A) is true but Reason (R) is false.	(D) Assertion (A) is false but Reason (R) is true.

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(A)

2 marks Short answer

The following distribution shows the weights of students of a class. Write down the modal class and the median class of the distribution.

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Modal class

; median class

3 marks Short answer

For the distribution below, construct the cumulative frequency table and hence write the median class, giving a reason.

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Median class

5 marks Long answer

The following distribution has one frequency missing, shown as

. The median of the distribution is

and the total frequency is

. Find

, and show the cumulative frequency table you used.

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This is a slice of one chapter. The full bank covers every chapter of CBSE Class 10 Mathematics, board-pattern, with a fresh answer key every time.

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