In the formula,t = (M₁ - M₂)/ S_difference,"S_difference" is A)the sum of the standard deviations of the distribution of means. B)the pooled estimate of the populations' standard deviation. C)the standard deviation of the distribution of differences between means. D)the average standard deviation of the two samples.

Question

Quizplus · Accepted Answer

"S_difference" is the standard deviation of the distribution of differences between means, which is used in calculating the t-value for a two-sample t-test. It measures the variability between the means of the two samples, and is calculated by subtracting the two sample means and dividing by their standard error. Options A, B and D do not accurately describe S_difference.

In the Formula,t = (M1 - M2)/ Sdifference,"Sdifference" Is

In the Formula,t = (M₁ - M₂)/ S_difference,"S_difference" Is