Three samples with N's of 5, 5, and 10 produced sample means of 2, 3, and 4 respectively. The weighted mean is
A) 6.67
B) 3.00
C) 3.25
D) 3.50.

Name: Three samples with N's of 5, 5, and 10 produced sample means of 2, 3, and 4 respectively. The weighted mean is A) 6.67 B) 3.00 C) 3.25 D) 3.50.
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Question

Quizplus · Accepted Answer

The weighted mean is calculated by multiplying each sample mean by its respective sample size, summing these products, and then dividing by the total number of observations. (5*2 + 5*3 + 10*4) / (5+5+10) = 3.25.

Three Samples with N's of 5, 5, and 10 Produced