Question

if the mean of the following data is 15 , Find P . class interval - 5-10 10-15 15-20 20-25 25-30. f- 6 P 6 10 5​

Answer 1

Answer:

p = 10................m..............

Answer 2

Answer:

p=43

Step-by-step explanation:

xi fi fixi

7.5 6 45

12.5 p 12.5p

17.5 6 105

22.5 10 225

27.5 5 137.5

Mean = £fixi / £fi

15 = 512.5 + 12.5p / 27 + p

15 (27+p) = 512.5 + 12.5p

405 + 15p = 512.5 + 12.5p

15p - 12.5p = 512.5 - 405

p= 43