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.
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