Frequency curve with the help of Histogram Example-1

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Home > Statistics > Statistical Graph > Frequency curve with the help of Histogram example

Frequency curve with the help of Histogram example ( Enter your problem )

( Enter your problem )

Example-1
Example-2

1. Example-1

1. Draw Frequency curve with the help of Histogram
Class Frequency
20 - 25 110
25 - 30 170
30 - 35 80
35 - 40 45
40 - 45 40
45 - 50 35

Solution:
To draw Frequency Polygon, we first prepare the following table

Class	Mid	Frequency `f`
15 - 20	17.5	0
20 - 25	22.5	110
25 - 30	27.5	170
30 - 35	32.5	80
35 - 40	37.5	45
40 - 45	42.5	40
45 - 50	47.5	35
50 - 55	52.5	0

To draw histogram, we first prepare the frequency distribution with boundary points, with central value of each class

Class	Lower	Upper	Frequency `f`
20 - 25	20	25	110
25 - 30	25	30	170
30 - 35	30	35	80
35 - 40	35	40	45
40 - 45	40	45	40
45 - 50	45	50	35

This material is intended as a summary. Use your textbook for detail explanation.
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