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 |
X | y | yx |
10 | 3 | 30 |
15 | 10 | 150 |
P | 25 | 25p |
25 | 7 | 175 |
35 | 5 | 175 |
N = 50 | ∑yx = 530 + 25p |
Given,
Mean = 20.6
= 20.6
= 20.6
530 + 25p = 20.6 (50)
25p = 20.6 (50) – 530
p = = 20