Class intervals Frequency

10-20 7

20-30 6

30-40 9

Greater than cumulative frequency of 1st group is.

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Solution

The correct option is B 22
The progressive sum of the frequencies from the last class to the lower boundary of the particular data class is the greater than cumulative frequency.

Marks Frequency Cumulative Frequency

10-20 7 15+7 = 22

20-30 6 9+6 = 15

30-40 9 9+0 = 9

Cumulative frequency for the 1st group is 22.

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Similar questions

Q. In the following grouped frequency distribution table class marks are given.

Class Marks	$10$	$22$	$34$	$46$	$58$	$70$
Frequency	$6$	$14$	$20$	$21$	$9$	$5$

(i) Construct class intervals of the data. (Exclusive class intervals)
(ii) Construct less than cumulative frequencies and
(iii) Construct greater than cumulative frequencies

Q. Calculate the less than cumulative frequency of the last group for the given grouped frequency distribution.

Class intervals	Frequency
0-10	5
10-20	7
20-30	8
30-40	9

Q. What is the class interval and frequency of the 4th group for the following distribution table?

Marks Obtained	Less than 5	Less than 10	Less than 15	Less than 20	Less than 25
No. of Students (Cumulative)	4	6	10	13	17

Class Intervals	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$120$	?	$200$	?	$185$
Cumulative Frequency	$120$	?	?	?	$900$

Cumulative frequency for class

40 - 50 =

If the cumulative frequency at a particular class interval 30 -35 is 19 and the cumulative frequency at the next class -interval i.e 35-40 is 27 , the frequency at 35-40 is __________

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Marks	Frequency	Cumulative Frequency
10-20	7	15+7 = 22
20-30	6	9+6 = 15
30-40	9	9+0 = 9

Class intervals Frequency 10-20 7 20-30 6 30-40 9 Greater than cumulative frequency of 1st group is.

Class intervals Frequency

10-20 7

20-30 6

30-40 9

Greater than cumulative frequency of 1st group is.