Find 'p' if the mean of the given data is 15.45.
CLASS
0-6
6-12
12-18
18-24
24-30
FREQUENCY
6
8
p
9
7
Answers
Answered by
11
Answer:
SUM OF FREQUENCY OR FI=30+P
SUM OF FIXI=468+15P
MEAN=FIXI/FI
15.45=468+15P/30+P
15.45(30+P)=468+15P
463.5+15.45P=468+15P
15.45P-15P=468-463.5
0.45P=4.5
P=4.5/0.45
P=10
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