Class and their frequency table for grouped data Example-2

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Home > Statistical Methods calculators > Class and their frequency table for grouped data example

Class and their frequency table for grouped data Example-2 ( Enter your problem )

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1. Example-1
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3. Example-3
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2. Example-2

1. Calculate Class and their frequency table
X Cumulative Frequency
20 15
30 40
40 60
50 72
60 80
70 85
80 88

Solution:
First we convert Cumulative frequency table to gropued frequency table

<	Cumulative Frequency
< 20	15
< 30	40
< 40	60
< 50	72
< 60	80
< 70	85
< 80	88

Class and their frequency table is

Class	Cumulative Frequency	Frequency
10 - 20	15	15 (= 15)
20 - 30	40	25 (= 40 - 15)
30 - 40	60	20 (= 60 - 40)
40 - 50	72	12 (= 72 - 60)
50 - 60	80	8 (= 80 - 72)
60 - 70	85	5 (= 85 - 80)
70 - 80	88	3 (= 88 - 85)

2. Calculate Class and their frequency table
X Cumulative Frequency
25 110
30 280
35 360
40 405
45 445
50 480

Solution:
First we convert Cumulative frequency table to gropued frequency table

<	Cumulative Frequency
< 25	110
< 30	280
< 35	360
< 40	405
< 45	445
< 50	480