If mean of the following frequency distribution is 58, then the value of p is
Class-
intervals
30-40 40-50 50-60 60-70 70 - 80 80 - 90
6 8 p 13 8
Frequency
Frequency
Answers
Answer:
Value of p = 32/3 .
Step-by-step explanation:
We are given with the mean of the following frequency distribution;
Class Interval Frequency (f) X X*f
30 - 40 6 35 210
40 - 50 8 45 360
50 - 60 p 55 55*p
60 - 70 1 65 65
70 - 80 3 75 225
80 - 90 8 85 680
∑f = 26+p ∑X*f = 1540+55*p
Mean of given data, X bar =
58 =
58(26 + p) = 1540 + 55*p
58*p - 55*p = 1540 - 1508
3*p = 32
p = 32/3
Therefore, value of p = 32/3 .
Answer:
this will help you
Step-by-step explanation:
thank you