Therefore, I let my fingers do the walking and shzaam, I was right.
http://pareonline.net/getvn.asp?v=9&n=11
Sample size and subject to item ratio in principal components analysis.
Jason W. Osborne and Anna B. Costello
North Carolina State University
Why size matters
Larger samples are better than smaller samples (all other things being equal) because larger samples tend to minimize the probability of errors, maximize the accuracy of population estimates, and increase the generalizability of the results.
Unfortunately, there are few sample size guidelines for researchers using EFA or PCA, and many of these have minimal empirical evidence (e.g., Guadagnoli & Velicer, 1988).
In multiple regression texts some authors (e.g., Pedhazur, 1997, p. 207) suggest subject to variable ratios of 15:1 or 30:1 when generalization is critical. But there are few explicit guidelines such as this for EFA or PCA (Baggaley, 1983). Two different approaches have been taken: suggesting a minimum total sample size, or examining the ratio of subjects to variables, as in multiple regression.
Comfrey and Lee (1992) suggest that “the adequacy of sample size might be evaluated very roughly on the following scale: 50 – very poor; 100 – poor; 200 – fair; 300 – good; 500 – very good; 1000 or more – excellent” (p. 217). Guadagnoli and Velicer (1988) review several studies that conclude that absolute minimum sample sizes, rather than subject to item ratios, are more relevant. These studies range in their recommendations from an N of 50 (Barrett & Kline, 1981) to 400 (Aleamoni, 1976).
Thus there sample of 93 would lead to a "very poor" to "poor" results. Nuff said.
As an aside, would be curious to see results of those women who smoked pot. Wonder if the little rug rats end up being mellow and skip entirely terrible two's? LOL
I always hated (and was my worst subject) statistics in College
Me too. The only class I had to repeat. I got a D and Florida State did not allow a D so I took it again with the same professor immediately and I think he pitied me and gave me a C-.
Anyway, the more important question is when did these MF'er start calling a baby in the womb a baby? I hate them because they never call it a baby except when it pleases their position. I have no respect for these folks AT ALL!!!! I know hate is a strong word and could be a sin, but I will risk it over the murderers!!!!!