Question

Weekly pocket expenses (in $) of 20 students of class VIII are 37, 41, 39, 35, 51, 45, 56, 61, 58,
49, 37, 52, 64, 39, 55, 39, 37, 59, 57, 37.
Construct the grouped frequency table with the class interval of equal width such as 35 – 40(40 not
included). Also, find the range of the weekly pocket expenses.

Answer 1

Given :  Weekly pocket expenses (in $) of 20 students of class VIII are

37, 41, 39, 35, 51, 45, 56, 61, 58, 49, 37, 52, 64, 39, 55, 39, 37, 59, 57, 37.

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

the range of the weekly pocket expenses.

Solution:

Arranged in order

35 37 37 37 37 39 39 39 41 45 49 51 52 55 56 57 58 59 61 64

Least is 35

Largest is 64

Range = 64 - 35  = 29

CI                   Tally Marks                f

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                 I                             1

45 - 50               II                             2          

50 - 55                II                            2      

55 - 60            $\setlength{\unitlength}{0.5cm} \begin{picture}(4,4) \multiput(2, 1)(0.2, 0){4}{\line(0, 1){0.5}} \put(1.8, 1){\line(2, 1){1}} \end{picture}$                            5

60 - 65              II                              2  

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Answer 2

Answer:

sir wala correct hai .

ok.