The ages of students of 10^th class, in a school are as follows. The ages are given in years months.

14 $-$ 6, 13 $-$ 11, 15 $-$ 2, 16 $-$ 0, 13 $-$ 9, 14 $-$ 5, 14 $-$ 7, 14 $-$ 0,
15 $-$ 0, 15 $-$ 1, 16 $-$ 2, 14 $-$ 1, 13 $-$ 11, 16 $-$ 0, 14 $-$ 5, 14 $-$ 0,
14 $-$ 8, 14 $-$ 4, 15 $-$ 4, 15 $-$ 9, 15 $-$ 1, 14 $-$ 10, 14 $-$ 13 $-$ 8

15 $-$ 1, 14 $-$ 1, 16 $-$ 0, 13 $-$ 10, 14 $-$ 0, 15 $-$ 0, 13 $-$ 6, 13 $-$ 11,
14 $-$ 3, 14 $-$ 8, 14 $-$ 7, 14 $-$ 8, 14 $-$ 1, 15 $-$ 0, 15 $-$ 1, 14 $-$ 4,
14 $-$ 9, 14 $-$ 9, 14 $-$ 10, 15 $-$ 3, 14 $-$ 9, 13 $-$ 10, 13 $-$ 2, 15 $-$ 1,

Prepare a grouped frequency distribution table (classes; 13 $-$ 14, 14 $-$ 15, 15 $-$ 16, ....)

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Solution

The frequency distribution table is given below:

Class Tally Marks Frequency

13 $-$ 14 9

14 $-$ 15 23

15 $-$ 16 13

16 $-$ 17 5

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Similar questions

Q. Prepare a frequency table of the following ages (in years) of 30 students of class VIII in your school:

13, 14, 13, 12, 14, 13, 14, 15, 13, 14, 13, 14, 16, 12, 14
13, 14, 15, 16, 13, 14, 13, 12, 17, 13, 12, 13, 13, 13, 14

Question 93

The marks obtained (out of 20) by 30 students of a class in a test are as follows :
14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14,
19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20.
Preparing a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

The ages of 37 students in a class are given in the following table:

Find the Median

Q. The frequency table of the ages of 40 students in a class is given below. Find their mean age.

Age of students (in years)	11	12	13	14
Frequency	16	10	12	2

Q. The marks obtained by 40 students of class VIII in an examination are given below:
16, 17, 18, 3, 7, 23, 18, 13, 10, 21, 7, 1, 13, 21, 13, 15, 19, 24, 16, 3, 23, 5, 12, 18, 8, 12, 6, 8, 16, 5, 3, 5, 0, 7, 9, 12, 20, 10, 2, 23.
Divide the data into five groups, namely 0-5, 5-10, 10-15, 15-20 and 20-25 and prepare a grouped frequency table.

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Class	Tally Marks	Frequency
13 $-$ 14		9
14 $-$ 15		23
15 $-$ 16		13
16 $-$ 17		5

The frequency distribution table is given below: Class Tally Marks Frequency 13-14 9 14-15 23 15-16 13 16-17 5

The frequency distribution table is given below:

Class Tally Marks Frequency

13 $-$ 14 9

14 $-$ 15 23

15 $-$ 16 13

16 $-$ 17 5