Statistical Tests of Significance
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One Sample Z test
Formula used and other details
Sample mean (x̄)
Get from data
Required
Arithmatic Mean of the sample in your study.
Population Standard Deviation (σ)
Required
Population Standard Deviation
Sample Size in the group
(N)
Required
Number of observations.
Hypothesized mean / known mean (μ)
Required
Hypothesized / known mean against which sample mean is compared.
Alpha % (type I error - in percentage)
%
Enter positive number between 0.01 to 99.99
Required
Commonly used values are 5%, 1% and 10%. If your significance level is 0.05, then enter 5
One sided or two sided
Enter either 1 or 2
Required
One tailed or two tailed hypothesis
Results