A sample of n = 5 scores has ΣX = 20 and ΣX² = 120.For this sample,what is the value of SS?
A)20
B)40
C)100
D)120

Name: A sample of n = 5 scores has ΣX = 20 and ΣX² = 120.For this sample,what is the value of SS? A)20 B)40 C)100 D)120
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Question

Quizplus · Accepted Answer

The formula for the sum of squares (SS) is SS = ΣX² - (ΣX)² / n. Plugging in the given values, SS = 120 - (20)² / 5 = 120 - 400 / 5 = 120 - 80 = 40.

A Sample of N = 5 Scores Has ΣX =