The Variance Of $\bar { Y } , \sigma \frac { 2 } { Y }$

question 12

Multiple Choice

The variance of $\bar { Y } , \sigma \frac { 2 } { Y }$ , is given by the following formula:

• A) \(\sigma \frac { 2 } { Y }\)
• B) \(\frac { \sigma _ { y } } { \sqrt { n } }\)
• C) \(\frac { \sigma _ { \gamma } ^ { 2 } } { n }\)
• D) \(\frac { \sigma _ { y } ^ { 2 } } { \sqrt { n } }\)

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