An Investigation of the Problem of Correction for Guessing

Author(s):

Keats, John A.

Publication Year:

1953

Report Number:

RB-53-21

Source:

ETS Research Bulletin

Document Type:

Report

Page Count:

11

Subject/Key Words:

Guessing (Tests), Mathematical Models, Scoring Formulas

Abstract

The purpose of this bulletin is to set out a method of investigating the problem of correction for guessing. The method involves the use of probability theory and a model which may be made more or less complicated. Methods of estimation are set out under certain assumptions, including an estimate of the average probability of success by guessing for a given group of persons and items. Data are collected by repeated testing. Illustration data and a list of problems which should be investigated are presented.

Read More

• Request Copy (specify title and report number, if any)
• http://dx.doi.org/10.1002/j.2333-8504.1953.tb00236.x