for this data what would be ' h ' inorder to find the mean through step deviation method
Number of days
0 6
6 10
10 14
14 20
20 28
28 38
38 40
Number of students
11
10
7
4
4
3
1

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Solution

$M o s t l y, w e c h o o s e t h e c l a s s s i z e f o r t h e v a l u e o f h b u t h e r e t h e c l a s s s i z e s v a r i e s . B u t y o u c a n c h o o s e a n y n u m b e r f o r h . b e c a u s e v a l u e o f h d o e s n o t d e p e n d o n t h e c l a s s s i z e . W h a t e v e r v a l u e y o u t a k e, y o u r a n s w e r w o u l d r e m a i n s a m e .$

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Similar questions

No. of days	0-6	6-10	10-14	14-20	20-28	28-38	38-40
No. of students	11	10	7	4	4	3	1

Marks	0-10	10-20	20-30	30-40	40-50	50-60	60-70
No. of students	$6$	$5$	$8$	$15$	$7$	$6$	$3$

Number of days:	0 − 6	6 − 12	12 − 18	18 − 24	24 − 30	30 − 36	36 − 42
Number of students:	10	11	7	4	4	3	1

Number of days:	0 − 6	6 − 10	10 − 14	14 − 20	20 − 28	28 − 38	38 − 40
Number of students:	11	10	7	4	4	3	1

Class	0-10	10-20	20-30	30-40	40-50	50-60
Frequence	6	7	15	16	4	2

Class interval (X)	0-10	10-20	20-30	30-40	40-50	50-60	60-70
Frequency	15	10	15	20	25	30	35

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