Find the value of p for the following distribution whose mean is 16.6
x: 8 12 15 p 20 25 30y: 12 16 20 24 16 8 4
Answers
Answer:
Value of p = 18
Step-by-step explanation:
We are given the mean of following distribution;
X f X*f
8 12 96
12 16 192
15 20 300
p 24 24*p
20 16 320
25 8 200
30 4 120
∑f = 100 ∑X*f = 1228+24*p
Mean of the data is given by, X bar =
16.6 =
16.6 * 100 = 1228 + 24*p
24*p = 1660 - 1228
p = 432/24 = 18
Therefore, value of p for the given distribution is 18 .