Question

Weekly pocket expenses (in $) of 30 students of class VIII are 37, 41, 39, 34, 71, 26, 56, 61, 58, 79, 83, 72, 64, 39, 75, 39, 37, 59, 57, 37, 53, 38, 49, 45, 70, 82, 44, 37, 79, 76.

Construct the grouped frequency table with the class interval of equal width such as 30 - 35. Also, find the range of the weekly pocket expenses.


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Answer 1

Given : Weekly pocket expenses (in $) of 30 students of class VIII are 37, 41, 39, 34, 71, 26, 56, 61, 58, 79, 83, 72, 64, 39, 75, 39, 37, 59, 57, 37, 53, 38, 49, 45, 70, 82, 44, 37, 79, 76.

To Find : the grouped frequency table with the class interval of equal width

Range

Solution:

Range  = Maximum - minimum

83  - 26   = 57

Class interval    Tally marks           frequency

25  - 30                |                             1

30 - 35                  |                            1

35 - 40               $\setlength{\unitlength}{0.5cm} \begin{picture}(4,4) \multiput(2, 1)(0.2, 0){4}{\line(0, 1){0.5}} \put(1.8, 1){\line(2, 1){1}} \end{picture}$  |||                      8

40 -45                 ||                             2

45 - 50                 ||                            2

50 -55                  |                             1

55 - 60                ||||                           4                    

60 - 65                ||                             2

65 - 70                                               0

70 -75                |||                             3

75 - 80               ||||                            4

80- -85                 ||                             2

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Answer 2

Answer:

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Step-by-step explanation:

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