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Standard error & Variability

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One sample has n = 8 scores with SS = 45 and the second sample has n = 4 scores with SS = 15.

In another set, one sample has n = 8 scores with SS = 150 and the second sample n = 4 scores with SS = 90.

How to calculate expected difference between the samples means, and how does larger variability affect the size of the standard error for the sample mean difference?

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Solution Summary

The solution provides step by step method for the calculation of standard error. Formula for the calculation and Interpretations of the results are also included.

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