A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)?
A)20
B)80
C)100
D)380

Name: A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)? A)20 B)80 C)100 D)380
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Question

A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)?​
A)​20
B)​80
C)​100
D)​380

Quizplus · Accepted Answer

The formula for SS is SS = ΣX2 - (ΣX)^2/N. Plugging in the values: SS = 100 - (20)^2/5 = 100 - 80 = 20.

A Population of N = 5 Scores Has ΣX =