When Statisticians Describe Pooling the Variances, They Mean

question 10

Multiple Choice

When statisticians describe pooling the variances, they mean:

• A) adding the standard deviations of the two samples.
• B) adding the variances of the two samples.
• C) taking the average of the two variances, accounting for sample size.
• D) taking the average of the two variances, disregarding sample size.

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