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DataStar, Inc.
PO Box 890193, East Weymouth, MA 02189
781-647-7900
Z-test of proportions:
Tests the difference between two proportions. Confidence levels computed provide the probability that a difference at least as
large as noted would have occurred by chance if the two population proportions were in fact equal. More information...
To run a z-test, you will be prompted to provide the following:
Proportions for the two independent groups
Sample sizes for the two groups
Both one- and two-tailed probabilities are computed using the data specified. As well as displaying actual probability levels,
StarStat provides "broad" level of testing at 80%, 90%, 95% and 99% confidence levels, using 2-tailed tests.
Proportions for the two independent groups
Sample sizes for the two groups
Both one- and two-tailed probabilities are computed using the data specified. As well as displaying actual probability levels,
StarStat provides "broad" level of testing at 80%, 90%, 95% and 99% confidence levels, using 2-tailed tests.
Get the StarStat app for your iPhone.
