1
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

Consider the following frequency distribution for the next three (03) items follow :

Class 0-20 20-40 40-60 60-80 80-100
Frequency 17 p + q 32 p - 3q 19

 

The total frequency is 120. The mean is 50.

What is the value of q ?
A
1
B
2
C
3
D
4
2
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

Consider the following frequency distribution for the next three (03) items follow :

Class 0-20 20-40 40-60 60-80 80-100
Frequency 17 p + q 32 p - 3q 19

 

The total frequency is 120. The mean is 50.

If the frequency of each class is doubled, then what would be the mean?
A
25
B
50
C
75
D
100
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