When should a paired t-test be performed instead of a two-sample t-test? Choose

Question

When should a paired t-test be performed instead of a two-sample t-test? Choose the correct answer below. O A. A paired t-test should be performed instead of a two-sample t-test when the variable of interest is O B. A paired t-test should be performed instead of a two-sample t-test when the observations within each O C. A paired t-test should be performed instead of a two-sample test when the samples taken are 0 D. A paired t-test should be performed instead of a two-sample t-test when the sample sizes are small and O E. A paired t-test should be performed instead of a two-sample t-test when each observation in one group categorical sample are dependent. independent of each other. the data in each population are not normally distributed. has a dependence on a particular observation in the other group.

Explanation / Answer

Option E- is correct

Because paired t test is used when two samples are dependent , i.e . Two sample units are paired together eg (height, weight) or in other words a unit in one sample is related (dependent) on a unit of another sample ...

One should not get confused with option b - because it is saying observations within sample each sample are dependent

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