Independent Samples T-Test - Comparing Two Proportions

From Q
Jump to navigation Jump to search

Where g1 and g2 are the two proportions and n1 and n2 are the sample sizes:

z=g1−g2g12(1−g12)(n1−1+n2−1)

where:

g12=n1g1+n2g2n1+n2

where p≈2Pr⁡(tn1+n2−2≥|t|).