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tethead tethead
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Posts: 1298
Rep: 6 0
6 years ago
When figuring the pooled population variance estimate in a t test for independent means,
A) the estimates based on each of the samples are averaged in such as way as to give more influence to the estimate based on more participants.
B) the scores from both samples are combined to form a single sample, and the estimated variance is figured in the usual way using this combined sample.
C) the variance of at least one of the original populations must be known, as opposed to estimated, but the other can be estimated from sample scores.
D) the variance of BOTH of the original populations must be known, as opposed to estimated.
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aeLiaLaeLiaL
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Posts: 828
6 years ago
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tethead Author
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6 years ago
This helped my grade so much Perfect
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Yesterday
Thank you, thank you, thank you!
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2 hours ago
this is exactly what I needed
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