Estimating Moments by Item-Sampling--Small-Sample Formulas

Author(s):

Lord, Frederic M.

Publication Year:

1963

Report Number:

RB-63-01

Source:

ETS Research Bulletin

Document Type:

Report

Page Count:

8

Subject/Key Words:

Estimation (Mathematics), Item Sampling, Sample Size

Abstract

Suppose a random sample of n items have been administered to a random sample of m examinees. Small-sample formulas are given for estimating the mean and variance that would have been found for the number-right scores, These formulas are useful when it is impossible to administer all items to all examinees.

Read More

• Request Copy (specify title and report number, if any)