Question

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

a.Construct the grouped frequency table with 6 class

b.draw a histogram

c.Draw a polygon

d.Draw a stem and leaf

Answer 1

Weekly pocket expenses in $ of 32 students of class

First we arrange the data in ascending order:

26 34 37 37 37 37 37 38 39 39 39 41 44 45 49 53 53 56 57 58 59 61 64 70 71
72 75 76 79 79 82 83

Here minimum=26 and maximum=83

We want 6 classes, therefore the class width is obtained by:

Rounding to whole number class width=10

a) The grouped frequency table of the data is:

    Class     frequency

26-36            2

36-46            12

46-56            3

56-66            6

66-76           4

76-86          5

Total          32

b)