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Null HypothesisFor Spearman Rank There is no association / correlation between _____________ and _____________. For Standard Error and 95% Confidence Limits There is no difference between the mean number of _____________ in different conditions. For χ2 There is no difference between the observed results and the expected results
The purpose of any statistical test is to determine the probability of a set of results being due to chance.
Spearman RankValue less than critical value- Chance greater than p=0.05- Accept null hypothesisValue greater than critical value- Chance less than p=0.05 - Reject null hypothesis
Standard DeviationIf confidence limits overlap- No significant difference- Chance greater than p=0.05- Accept null hypothesisIf confidence limits don't overlap- Significant difference- Chance less than p=0.05- Reject null hypothesis
Chi SquareValue less than critical value- Chance greater than p=0.05- Accept null hypothesisValue greater than critical value- Change less than p=0.05- Reject null hypothesis
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