Stat Testing

The Stat Testing calculator is for statistical testing of two groups on a single variable. The point estimates that are tested can either be percentages or means and can be based either on unweighted or weighted data. The two groups are allowed to overlap.
 
Is the data weighted?: Yes No
Do the groups overlap
(i.e. Total vs Male)?:
Yes No
Group 1 Group 2

Unweighted Base:
Weighted Base:
Effective Base:
Testing: Percent Means

Percentages: % %
Means:
Standard Deviation:
t-value:
p-value: (2 tailed test)
Significant at: % Confidence Level




Reliability for a 50% Proportion

The Reliability for a 50% Proportion calculator is for estimating degree of reliability around a 50% estimate for a proportion. It either calculates the margin of error given a base size n or calculates the base size n required to attain a specified margin of error.
 
Margin of Error
Base:
Confidence Level: %
Margin of Error +/-: %




Base Size Calculator
Margin of Error +/-: %
Confidence Level: %
Base Size Needed:





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