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THE ADJUSTMENT FOR A NATURAL RESPONSE RATE IN PROBIT ANALYSIS
Author(s) -
FINNEY D. J.
Publication year - 1949
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1949.tb06408.x
Subject(s) - weighting , probit model , statistics , regression , computation , probit , regression analysis , econometrics , biology , linear regression , mathematics , algorithm , medicine , radiology
A revised scheme of computation is suggested for the fitting of a probit regression line to quantal response data which have to be adjusted because of the occurrence of natural responses not caused by the stimulus under test. The calculations lead to the same results as those proposed when the method was first introduced, but have the advantages of close similarity with multiple regression calculations and of simplifying the test of heterogeneity. The new scheme is illustrated on the example used in the earlier paper. A table of weighting coefficients for use with high natural response rates is presented.