Short Quiz

Question 1 of 5

NCERT Exemplar

For the following distribution :

Marks	Number of students
Below 10	3
Below 20	12
Below 30	27
Below 40	57
Below 50	75
Below 60	80

the modal class is

A \(\quad 10-20\) B \(\quad 20-30\) C \(\quad 30-40\) D \(\quad 50-60\)

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Question 2 of 5

CBSE Board Exam 2025

If the mean of \(2,9, x+6,2 x+3,5,10,5\) is 7 , then the value of \(x\) is :

A 9 B 6 C 5 D 3

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Question 3 of 5

CBSE Board Exam 2026

The following distribution shows the number of runs scored by some batsmen in test matches :

Runs Scored	3000-4000	4000-5000	5000-6000	6000-7000
Number of Batsmen	5	10	9	8

The lower limit of the modal class is :

A 3000 B 4000 C 5000 D 6000

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Question 4 of 5

NCERT Exemplar

In the following distribution :

Monthly income range (in Rs)	Number of families
Income more than Rs 10000	100
Income more than Rs 13000	85
Income more than Rs 16000	69
Income more than Rs 19000	50
Income more than Rs 22000	33
Income more than Rs 25000	15

the number of families having income range (in Rs) 16000-19000 is

A 15 B 16 C 17 D 19

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Question 5 of 5

In statistics, an outlier is a data point that differs significantly from other observations of a data set.

If an outlier is included in the following data set, which measure(s) of central tendency would change?

12, 15, 22, 44, 44, 48, 50, 51

A only mean B only mean and median C all - mean, median, mode D (cannot be said without knowing the outlier.)

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