SOCR EduMaterials AnalysisActivities NormalPower SampleSize
SOCR Normal Power Analysis Activity: Look for Sample Size
1. Click on SELECT PARAMETER. Be sure that the box Get Sample Size Using Power is clicked. Have all the fields filled out.
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2. Click on RESULT to see the result.
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3. Then Click on GRAPH to see function of possible values of power. Note that five curves will be given, one of them has the calculated sample size, and the other four curves correspond to sample size adding 10, 20, 30 and 40.
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4. Also click on COMPARE CURVES to see the population and distribution of mean.
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