The number of books in different shelves of a library are as follows:
30, 32, 28, 24, 20, 25, 38, 37, 40, 45, 16, 20, 19, 24, 27, 30, 32, 34, 35, 42, 27, 28, 19, 34,
38, 39, 42, 29, 24, 27, 22, 29, 31, 19, 27, 25, 28, 23, 24, 32, 34, 18, 27, 25, 37, 31, 24, 23,
43, 32, 28, 31, 24, 23, 26, 36, 32, 29, 28, 21.
Prepare a cumulative frequency distribution table using 45-49 as the last class interval.
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Answer:
The number of books in different shelves of a library are as follows :
30,32,28,24,20,25,38,37,40,45,16,20
19,24,27,30,32,34,35,42,27,28,19,34,
38,39,42,29,24,27,22,29,31,19,27,25
28,23,24,32,34,18,27,25,37,31,24,23,
43,32,28,31,24,23,26,36,32,29,28,21.
Prepare a cumulative frequency distribution table using 45 - 49 as the last class-interval.
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ANSWER
Now we can prepare table cumulative frequency distribution
Class-interval Frequency Cumulative frequency
15−19
20−24
25−29
30−34
35−39
40−44
45−49 5
14
16
13
7
4
1 5
19
35
48
55
59
60
Answer:
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Step-by-step explanation:
Minimum number of book shelves is 16 and maximum number of book shelves is 45
Range = maximum B.S - Minimum B. S
= 45 – 16
= 29
Given class interval = 45 – 49. So class size
49-45 = 4.
∴ Number of classes = range / Class size = 29 / = 7.25
=> Number of classes = 8.
The cumulative frequencies distribution is as follows:
