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The Formula for the Sample Variance Is
A) sY2=1n−1∑i=1n(Yi−Yˉ)s _ { Y } ^ { 2 } = \frac { 1 } { n - 1 } \sum _ { i = 1 } ^ { n } \left( Y _ { i } - \bar { Y } \right)

Question 19

Multiple Choice

The formula for the sample variance is


A) sY2=1n−1∑i=1n(Yi−Yˉ) s _ { Y } ^ { 2 } = \frac { 1 } { n - 1 } \sum _ { i = 1 } ^ { n } \left( Y _ { i } - \bar { Y } \right)
B) sY2=1n−1∑i=1n(Yi−Yˉ) 2s _ { Y } ^ { 2 } = \frac { 1 } { n - 1 } \sum _ { i = 1 } ^ { n } \left( Y _ { i } - \bar { Y } \right) ^ { 2 }
C) sY2=1n−1∑i=1n(Yi−μY) 2s _ { Y } ^ { 2 } = \frac { 1 } { n - 1 } \sum _ { i = 1 } ^ { n } \left( Y _ { i } - \mu _ { Y } \right) ^ { 2 }
D) sY2=1n−1∑i=1n−1(Yi−Yˉ) 2s _ { Y } ^ { 2 } = \frac { 1 } { n - 1 } \sum _ { i = 1 } ^ { n - 1 } \left( Y _ { i } - \bar { Y } \right) ^ { 2 }

Correct Answer:

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