Convert the following frequency distribution to exclusive form : … - Vidyadip

Question

Convert the following frequency distribution to exclusive form :

Class-interval	Frequency
30 - 34	7
35 - 39	9
40 - 44	13
45 - 49	6
50 - 54	3
55 - 59	10

Use this table to find :
(i) The true class-limits of the fourth class-interval
(ii) The class-boundaries of the fifth class-interval
(iii) The class-mark of the third class-interval
(iv) The class-size of the sixth class-interval.

✓

Answer

Class-interval	Frequency
29.5 - 34.5	7
34.5 - 39.5	9
39.5 - 44.5	13
44.5 - 49.5	6
49.5 - 54.5	3
54.5 - 59.5	10

(i) 44.5 - 49.5 (ii) 49.5 - 54.5
(iii) 42 (iv) 5

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