Power Tutorial
bullet Introduction
- Exercise 1a: Effect Size
- Exercise 1b: ACE
- Exercise 1c: DEUCE
- Exercise 2: Variability
- Question A
- Exercise 3: Sample Size
- Question B
- Exercise 4: Alpha
- Question C
bullet Follow-up Questions
bullet Power Calculations
- Power and Sample Size
- Minimum Effect Size
- Exercises

Pages: E1A  E1B  E1C  E2  QA  E3  QB  E4  QC

Description of the WISE Power Applet

Note: this is not a 'live' applet.


This applet simulates a test of the null hypothesis that the population mean is equal or less than a specified value (e.g., μ ≤ 100). The alternative hypothesis is that the population mean is greater than this value (e.g., μ > 100). We assume a normal population distribution with a known standard deviation (e.g., σ = 15) so we can conduct a one-tailed z test.

The user can enter desired values into the text boxes or use a mouse to ‘drag’ the mean of the Alternate Population, the sample size, or power to see how a change of one value affects others

Place the cursor over different parts on the picture above for a description of applet features.

Questions, comments, difficulties? See our technical support page or contact us: wise@cgu.edu.