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Unformatted text preview: Test Hypotheses that do not involve parameters Data are nominal or ordinal Data are not normally distributed Spearman rank correlation, chi-square-What does statistical significance mean? o There is only a small probability that what we found was due to chance alone o That small chance probability goes by various names: Type 1 error Alpha level (pre determined by investigator Symbolized by an italicized p (observed)-In Psychology alpha is usually 5% or .05 o If our results cannot be obtained by chance more than 5 times in 100 random trials our results are statistically significant...
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This note was uploaded on 04/17/2008 for the course PSYCH 256 taught by Professor Dasilva during the Fall '07 term at Calvin.
- Fall '07