Need to find out something about one or two samples hypothesis testing?
What interval contains the true mean of my process?
Are the averages of these two processes the same?
Do these two test methods give the same result?
What sample size do I need to detect a shift of one standard deviation?
Do these two groups have different opinions about this candidate?
Watch a Video on Hypothesis Testing in SPC for Excel
Watch a Video Showing the Power and Sample Size Analysis
One/Two Sample Hypothesis Testing and SPC for Excel
Our SPC software, SPC for Excel, contains the following tests for one and two samples:
One sample z and t tests for a mean
One sample variance test
z and t tests for the difference in two means
t test for paired sample comparison
One proportion test
Two proportion test
The software also contains power and sample curves to help determine the sample size needed for a certain power. The output contains the major calculations and gives the conclusion, either the null hypothesis is rejected or not rejected based on the value of alpha.