In general, the size of a test can be modified by changing the critical value(s) of the test, that is, by reducing or increasing the size (and hence the probability) of the critical region (remember that the critical region is the set of values of the test statistic that lead to reje...
The package also provides ways of converting between different effect sizes. d_to_r(d=0.2)## [1] 0.0995oddsratio_to_riskratio(2.6,p0=0.4)## [1] 1.59 And for recovering effect sizes from test statistics. F_to_d(15,df=1,df_error=60)## d | 95% CI## ---## 1.00 | [0.46, 1....
Zhang, DonghuiTaylor And FrancisCommunications in StatisticsFan, C. P., and D. H. Zhang. 2017. On power and sample size of the ANOVA-type rank test. Commun. Stat. Simul. Com- put. 46: 3224-3241. doi:10.1080/03610918.2015.1082585
The best model was selected on the basis of the F-test statistics [Pr (>F)], the probability of rejecting the null hypothesis, where one model does not fit significantly better (α = 0.05) than the model with zero slope. A relative-importance analysis test was used to quantify the...
Second, another focus lies on implementations of common statistical significance tests with a consistent syntax, like t-test, Mann-Whitney test, Chi-squared test, and more. These functions are designed to be more user-friendly and also support weights, i.e. weighted statistics can be calculated...
H Wang,B Chen,SC Chow - 《Journal of Biopharmaceutical Statistics》 被引量: 36发表: 2003年 Sample-size determination based on Fisher exact test for use in 2x2 comparative trials with low event rates Sample size determination based on rank tests in clinical trials. J Biopharm Stat. 2003;13(...
It can be hard to find the perfect sample size for statistically sound results. Here we reveal methods and tools for effective sample size determination.
Hedges' g, which provides a measure of effect size weighted according to the relative size of each sample, is an alternative where there are different sample sizes. (This is important! If you've got different sample sizes then you should use Hedges' g.) ...
CoverageStatistics CoverageStatus CoverageSummaryStatus Vytvořit panel CreatePipelineConfigurationParameters CreatePipelineParameters Vytvořit plán CreateProcessModel CreateProcessRuleRequest CreateProcessWorkItemTypeRequest CreateProfileContext CreateScopeInfo CreateTestMessageLogEntryRequest CreateTestResultsRequest Crea...
through the gas and eventually it’s split towards two detectors with a beam-splitter. There is a big vacuum chamber used to provide conditions for a significant spreading of the gas particles wave functions to occur. The model applies to any type of gas. We chose to test the water vapor...