When Variances $S _ { 1 } ^ { 2 } \text { and } S _ { 2 } ^ { 2 }$

question 23

Multiple Choice

When variances $S _ { 1 } ^ { 2 } \text { and } S _ { 2 } ^ { 2 }$ of two independent samples are combined and $S ^ { 2 }$ is computed, the $S ^ { 2 }$ is referred to as

• A) the pooled estimator of \(S ^ { 2 }\)
• B) the combined estimator of \(S ^ { 2 }\)
• C) the pooled estimator of the common variance \(\sigma ^ { 2 }\)
• Of the two populations
• D) the adjusted estimator of \(S ^ { 2 }\)
• E) None of the above answers are correct.

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