Author Question: Concerning inference on two independent population means, the pooled variance estimate is: (Read 71 times)

ksmithunr · **on:** Feb 26, 2023

Concerning inference on two independent population means, the pooled variance estimate is:

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a way of estimating variance that relies on the information provided by only one of the samples.

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an unbiased estimator of the parameter\(\style{font-family:Times New Roman;}{\sigma_1^2-\sigma_2^2}\).

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a combined (using a weighted average) estimate for the unknown variance of two populations.

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a less efficient but easier way of estimating population variances as compared to using two separate variance estimates (one for each population).

jojo120419 · **Reply #1 on:** Feb 26, 2023

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