Open AccessAN INTERACTIVE‐COMPUTER PROGRAM FOR THE JOHNSON‐NEYMAN TECHNIQUE IN THE CASE OF TWO GROUPS, TWO PREDICTOR VARIABLES, AND ONE CRITERION VARIABLE
Author(s) -
Carroll John B.,
Wilson Gertrude F.
Publication year - 1969
Publication title -
ets research bulletin series
Language(s) - English
Resource type - Journals
eISSN - 2333-8504
pISSN - 0424-6144
DOI - 10.1002/j.2333-8504.1969.tb00746.x
Subject(s) - computation , covariance , seriousness , variable (mathematics) , set (abstract data type) , raw score , computer program , raw data , mathematics , statistics , analysis of covariance , standard deviation , computer science , algorithm , programming language , mathematical analysis , political science , law
A program written in TELCOMP, an interactive‐computer language, is presented for doing all the necessary computations for the Johnson‐Neyman (1936) technique in the simplest case, starting from raw sums, sums of squares, and sums of cross‐products or from means, standard deviations, and correlations previously computed for the two groups. Computations are shown for three sets of data, two of which are from previous expositions of the method; it is noted that these previous expositions suffered from computational errors of major seriousness. The third set of data illustrates use of the method for investigating interactions between individual differences and treatments in such a way as to supplement the usual analysis of covariance procedures.