New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 25

EASY

10th CBSE

IMPORTANT

Earn 100

Consider the following frequency distribution of the heights of $60$ students of a class:

Height (in $cm$ ) Number of students

$150 - 155$ $15$

$155 - 160$ $13$

$160 - 165$ $10$

$165 - 170$ $8$

$170 - 175$ $9$

$175 - 180$ $5$

The sum of the lower limit of the modal class and upper limit of the median class is

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Important Questions on Statistics

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 1

Find the mode of the given data:

Class interval	$0 - 20$	$20 - 40$	$40 - 60$	$60 - 80$
Frequency	$15$	$6$	$18$	$10$

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 2

Frame the frequency distribution table for the following data:

Marks	Below $10$	Below $20$	Below $30$	Below $40$	Below $50$	Below $60$
Number of students	$0$	$12$	$20$	$28$	$33$	$40$

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 3

Find the mode (upto one correct decimal place) of the following data.

Class	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$
Frequency	$7$	$12$	$20$	$11$	$8$

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 4

The mean of the following data is $7.5$ . Find the value of $p$ .

$x_{i}$	$3$	$5$	$7$	$9$	$11$	$13$
$f_{i}$	$6$	$8$	$15$	$p$	$8$	$4$

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 5

A survey conducted on

20

households in a locality by a group of students resulted in the following frequency table for the number of family members in a household.

Family size	$1 - 3$	$3 - 5$	$5 - 7$	$7 - 9$	$9 - 11$
Number of families	$7$	$8$	$2$	$2$	$1$

Find the mode (up to two correct decimal place) for the data above.

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 7

Convert the following data to a less than type distribution.

C.I.	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$
Frequency	$2$	$8$	$12$	$24$	$38$	$16$

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 8

Find mean.

Class	$1 - 3$	$3 - 5$	$5 - 7$	$7 - 9$	$9 - 11$
Frequency	$7$	$8$	$2$	$2$	$1$

EASY

10th CBSE

IMPORTANT

New Mathematics for Class X>Chapter 14 - Statistics>REVISION EXERCISE>Q 9

Frame the table of more than type cumulative frequency distribution from the following distribution :

Class	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$
$f$	$2$	$6$	$8$	$14$	$15$	$5$