The class-width of the intervals in the given grouped frequency disribution table is- - - - nbsp- nbsp- nbsp- nbsp- Class interval - nbsp- nbsp- nbsp-Frequency - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- 0-10 - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- 2 - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-10-20 - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-10 - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-20-30 - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-21 - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-30-40 - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-19 - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-40-50 - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- 7 - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- 50-60 - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- 1 - - - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- Total - nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-60 - - 79105

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Cumulative Frequency

The class-wid...

Question

The class-width of the intervals in the given grouped frequency disribution table is:

Class interval Frequency

0-10 2

10-20 10

20-30 21

30-40 19

40-50 7

50-60 1

Total 60

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Solution

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Class-interval:	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80
Frequency:	5	8	7	12	28	20	10	10

Class-interval:	10−15	15−20	20−25	25−30	30−35	35−40
Frequency:	30	45	75	35	25	15

Class-interval:	25−30	30−35	35−40	40−45	45−50	50−55
Frequency:	25	34	50	42	38	14

Class:	0−10	10−20	20−30	30−40	40−50	50−60	60–70
Frequency:	8	10	10	16	12	6	7

f_{1}

f_{2}

N = 100

32

Class	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$T o t a l$
Frequency	$10$	$f_{1}$	$25$	$30$	$f_{2}$	$10$	$100$

Class	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$
Frequency	$4$	$4$	$7$	$10$	$12$	$8$	$5$

If the cumulative frequency for the class interval (50-60) is 92, then find x

$\begin{matrix} Class Interval & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 Frequency & 12 & 20 & x & 18 & 10 & 6 \end{matrix}$

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