Effect size for one sample t-test

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Reference no: EM1316493

Several factors influence statistical power for a one sample t test. How does statistical power change (increase or decrease) for each of the following changes?

When d (effect size) increases.
When N (sample size) increases
When the alpha level is made smaller.

Explain your answer. For example, if we know ahead of time that the effect size d is very small, what does this tell us about the N we will need in order to have adequate statistical power? (We assume that all other terms included in the r ratio remain the same).

Reference no: EM1316493

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