March 2016
Beginner to intermediate
232 pages
12h 12m
English
Content preview from Exploratory Factor Analysis with SASBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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An Empirical Investigation in Sample Size
A particularly interesting and relatively well-executed study conducted by Guadagnoli & Velicer (1988) investigated the effects of sample size under a series of different conditions. The authors used Monte Carlo methods to examine the effects of four criteria—1) the number of factors (3, 6, 9, 18), 2) the number of items (36, 72, 108, and 144), 3) the average item loadings (.40, .60, or .80), and 4) the number of subjects (Ns of 50, 100, 150, 200, 300, 500, and 1000)—on the stability of factor patterns in EFA. In this data, each item loaded on only one factor, all nonzero item loadings were of equal size, and each factor contained an equal number of variables. Their study represents one of the few studies ...
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