Changeset 9742 for branches/StatisticalTesting/HeuristicLab.Analysis.Statistics/3.3/StatisticalTestingView.resx
- Timestamp:
- 07/24/13 11:24:40 (11 years ago)
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branches/StatisticalTesting/HeuristicLab.Analysis.Statistics/3.3/StatisticalTestingView.resx
r9353 r9742 188 188 <value>17, 17</value> 189 189 </metadata> 190 <data name="infoLabel.ToolTip" xml:space="preserve">191 <value>This view offers tools for statistical analysis.192 193 Check for normality of the data is done using the Jarque-Bera test.194 It requires a sample size of at least 5 samples.195 196 Statistical hypothesis testing between all groups is performed using the Kruskal-Wallis test.197 198 For pairwise comparision of the groups the Mann-Whitney U test is used.199 It also requires sample sizes of at least 5 samples.200 201 The p-values calculated by the statistical tests are interpreted as follows:202 The null hypothesis states that the groups which are compared have the same distribution.203 A p-value < 0.05 (this value is often chosen as significance level) means the null hypothesis is rejected,204 which therefore means that the distributions are not equal.205 206 For the pariwise statistical test, in addition to the p-value, Cohen's d and Hedges' g are calculated.207 According to Wikipedia, these values can be interpreted as follows: "A lower Cohen's d indicates a necessity of larger sample sizes, and vice versa."</value>208 </data>209 190 </root>
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