Accession Number : AD0653099

Title :   ASSOCIATION IN A CLASS OF GROWTH FUNCTIONS.

Descriptive Note : Technical rept.,

Corporate Author : WEATHER SQUADRON (3RD) POPE AFB N C DETACHMENT 20

Personal Author(s) : Bargmann,Rolf E.

Report Date : DEC 1966

Pagination or Media Count : 55

Abstract : Birth models with time-dependent transition probabilities are useful for the analysis of growth functions. The 'availability' model (in contrast to the 'reliability' model) has been adopted, since initial time of observation or zero score is rarely a physically meaningful quantity in growth functions. The Weibull class has been selected as a class of growth functions. The report contains description of methods for maximum-likelihood estimation of the Weibull parameter, and estimation of the weighted regression parameters. A measure of association is defined from the regression analysis, and called the index of biserial association. A package of computer programs for the 7094 has been prepared, and documented in the appendix. Results of the analysis of some sampling experiments have been reported for illustration. (Author)

Descriptors :   (*LEARNING, PSYCHOLOGICAL TESTS), (*PSYCHOLOGICAL TESTS, *STATISTICAL ANALYSIS), ITERATIONS, PROBABILITY, RELIABILITY, FACTOR ANALYSIS, MATHEMATICAL MODELS, SAMPLING, COMPUTER PROGRAMS, STATISTICAL PROCESSES

Subject Categories : Psychology
      Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE