IBM SPSS SamplePower
by IBM NZ Ltd
SamplePower assists you in finding the right sample size for your research in minutes and testing the possible results before you begin your study. You can compare the effects of different study parameters with flexible analytical tools. SamplePower helps you get the right sample size the first time.
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SamplePower 2.0
In just a few easy steps, SamplePower helps you find the best sample size for your research. It comes with an interactive guide and built-in help features, so you won't lose time getting up to speed. SamplePower is developed by SPSS and a team of experts, including Michael Borenstein, Hannah Rothstein and Jacob Cohen, author of Statistical Power Analysis for the Behavioral Sciences. More...