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Grouped Frequency Distribution

Prepare group...

Question

Prepare grouped frequency distribution table by using the data given in example 1.
(Use classes : 11 − 20, 21 − 30, 31 − 40, ....., 71 − 80)

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Solution

The frequency distribution table is given below:

Class Frequency Tally Marks

11 $-$ 20 2

21 $-$ 30 6

31 $-$ 40 11

41 $-$ 50 17

51 $-$ 60 13

61 $-$ 70 9

71 $-$ 80 4

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Q. A grouped frequency distribution table with classes of equal size, using 63-72 (72 included) as one of the classes, is constructed for the following data:
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Q. Prepare an ungrouped frequency distribution table using the following data.

\begin{matrix} 14, & 16, & 23, & 23, & 25, & 28, & 29, & 30, & 33, & 37, & 37, & 38, & 38, & 38, & 40, & 40, & 40, & 40, & 40, & 41, & 41, \\ 42, & 43, & 44, & 44, & 44, & 45, & 46, & 46, & 47, & 47, & 48, & 49, & 49, & 50, & 50, & 51, & 51, & 52, & 52, & 52, & 55, \\ 55, & 56, & 56, & 56, & 58, & 59, & 60, & 61, & 61, & 62, & 63, & 65, & 66, & 67, & 68, & 68, & 71, & 72, & 73, & 73 . \end{matrix}

Q. The marks obtained (out of 20) by 30 students of a class in a test are given below:
7, 10, 8, 16, 13, 14, 15, 11, 18, 11, 15, 10, 7, 14, 20, 19, 15, 16, 14, 20, 10, 11, 14, 17, 13, 12, 15, 14, 16, 17.
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Q. The marks scored in a test of Marathi are recorded as follows.

41, 48, 46, 31, 46,25, 37,43, 55, 38, 18, 41, 55, 46, 58, 42, 23, 35, 41, 31, 45, 26, 11, 46, 43, 53, 47, 56, 46, 52, 20, 57, 41, 61, 71, 52, 66, 33, 43, 59, 55, 63, 57, 40, 43, 22, 58, 74, 63, 53, 47, 32, 58, 39, 66, 45.
Prepare a grouped frequency distribution table. (take the classes 11-20, 21-30, ....)

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