A population of N = 100 scores has mean µ = 30 and standard deviation σ = 4.What is the population variance?
A)2
B)4
C)8
D)16

Name: A population of N = 100 scores has mean µ = 30 and standard deviation σ = 4.What is the population variance? A)2 B)4 C)8 D)16
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Question

A population of N = 100 scores has mean µ = 30 and standard deviation σ = 4.What is the population variance?​
A)2​
B)​4
C)​8
D)​16

Quizplus · Accepted Answer

The formula for population variance is σ² = ∑(Xi-µ)²/N. Plug in the given values:
σ² = ∑(Xi-µ)²/N = ∑(Xi-30)²/100 = (100*(4²))/100 = 16

A Population of N = 100 Scores Has Mean µ