Make a frequency curve of the following data:

Class-interval 20−40 40−60 60−80 80−100 100−120 120−140 140−160

Frequency 3 7 11 15 13 6 2

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Solution

Class Interval Frequency

20 − 40
40 − 60
60 − 80
80 − 100

100 − 120
120 − 140

140 − 160
3
7
11
15
13
6
2

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Class-interval	20−40	40−60	60−80	80−100	100−120	120−140	140−160
Frequency	3	7	11	15	13	6	2

Class Interval	Frequency
20 − 40 40 − 60 60 − 80 80 − 100 100 − 120 120 − 140 140 − 160	3 7 11 15 13 6 2

Make a frequency curve of the following data: Class-interval 20−40 40−60 60−80 80−100 100−120 120−140 140−160 Frequency 3 7 11 15 13 6 2

Class Interval Frequency 20 − 40 40 − 60 60 − 80 80 − 100 100 − 120 120 − 140 140 − 160 3 7 11 15 13 6 2

Make a frequency curve of the following data:

Class-interval 20−40 40−60 60−80 80−100 100−120 120−140 140−160

Frequency 3 7 11 15 13 6 2

Class Interval Frequency

20 − 40
40 − 60
60 − 80
80 − 100

100 − 120
120 − 140

140 − 160
3
7
11
15
13
6
2