A method and tables for obtaining standard errors of differences between proportions when N1is equal to N2

Abstract

A method is presented for computing standard errors of differences between proportions where the 2 groups are of equal size. The mathematical basis of the method, the construction of the tables given, the use of the tables to obtain ∠? p1 - p2 , and an estimate of the amount of error involved in the use of the tables are given. Two tables are included: (1) values of[Equation omitted]for given values of p and p 2 ; (2) standard errors for given values of [Equation omitted] and N. (PsycInfo Database Record (c) 2025 APA, all rights reserved)