If the mean of the following data is 18.75. Find the value of p.
xi: 10 15 p 25 30
yi: 5 10 7 8 2
Answers
Answer:
Value of p = 20 .
Step-by-step explanation:
We are given the mean of following distribution;
X f X*f
10 5 50
15 10 150
p 7 7*p
25 8 200
30 2 60
∑f = 32 ∑X*f = 460+7*p
Mean of the data is given by, X bar =
18.75 =
18.75 * 32 = 460 + 7*p
7*p = 600 - 460
p = 140/7 = 20
Therefore, value of p for the given distribution is 20 .
Answer:
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