Remarks on the Method of Paired Comparisons: II. The Effect of an Aberrant Standard Deviation when Equal Standard Deviations and Equal Correlations are Assumed

Abstract

If customary methods of solution are used on the method of paired comparisons for Thurstone's Case V (assuming equal standard deviations of sensations for each stimulus), when in fact one or more of the standard deviations is aberrant, all stimuli will be properly spaced except the one with the aberrant standard deviation. A formula is given to show the amount of error due to the aberrant stimulus.

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