Q4 of 141 Page 8

If the mean of the following data is 15, find p.

x :

5

10

15

20

25

y :

6

p

6

10

5

Given,

Mean = 15

= 15

10p + 445 = 15 (p + 27)

10p + 445 = 15p + 405

15p – 10p = 445 – 405

5p = 40

p = = 8

Find the mean of the following data:

x:	19	21	23	25	27	29	31
y:	13	15	16	18	16	15	13

If the mean of the following data is 20.6. Find the value of p.

x:	10	15	p	25	35
y:	3	10	25	7	5

Find the value of p for the following distribution whose mean is 16.6

x :	8	12	15	p	20	25	30
y :	12	16	20	24	16	8	4

Find the missing value of p for the following distribution whose mean is 12.58

x:	5	8	10	12	p	20	25
y:	2	5	8	22	7	4	2

If the mean of the following data is 15, find p.x :510152025y :6p6105