sobota 22. septembra 2007

statistics genetics "a must see"

http://www.dorak.info/genetics/notes05.html

European Genetics Foundation
http://www.charite.de/ch/medgen/eumedis/statistics05/genetic-epidemiology.html

article by Kruglyak, Nickerson on the effect of SNP frequency on the LD and a measure of frequency matched SNP correlation.

linear trend ordinal variables

linear trend test for dichotomous(binary) with categorical-ordinal variables
e.g. linear trend of risk (OR) of some disease across genotypes

Cochran-Armitage - in SPSS can be done as - sort of - CROSSTABS - linear-by-linear association

more theory + statsdirect software

statistics resources

statistics resources + accompanying SPSS syntax
as recommended by Marta Garcia-Granero

at www.nabble.com

The book: http://www.bmj.com/collections/statsbk/
The SPSS syntax: http://www.kingdouglasconsulting.com/SPSS/DiverseCultures/Marta/Code/BMJ%20-%20Stats%20Square%20One.txt

streda 5. septembra 2007

statistics resources

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the well known series by dr Bland et ???? that appeared in BMJ
statistics at square one

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very instructive resource (maryland biology) by McDonald

measures of central tendency (location)
  1. mean (arithmetic, geometric, harmonic)
  2. median
  3. mode

anova POST HOCS EG:

http://www.uwsp.edu/psych/cw/statmanual/posthocs.html