A sample of n = 9 individuals participates in a repeated-measures study that produces a sample mean difference of MD = 4.25 with SS = 128 for the difference scores. Calculate the standard deviation...

A sample of n = 9 individuals participates in a repeated-measures study that produces a sample mean difference of MD = 4.25 with SS = 128 for the difference scores.

1. Calculate the standard deviation for the sample of difference scores. Briefly explain what is measured

by the standard deviation.

1. Calculate the estimated standard error for the sample mean difference. Briefly explain what is

measured by the estimated standard error.