G*Power – Software finder – University of Kent.Statistics Resources

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

We will inform you about updates if you click here and add your e-mail address to our mailing list. We will only use your e-mail address to inform you about updates. We will not use your e-mail address for other purposes. We will not give your e-mail address to anyone else. You can withdraw your e-mail address from the mailing list at any time. Faul, F. Behavior Research Methods , 39 , Download PDF. Behavior Research Methods , 41 , Fixed a bug in z tests: Generic z test: Analysis: Criterion: Compute alpha : The critical z was calculated incorrectly.

Fixed a bug in t tests: Linear bivariate regression: One group, size of slope. Fixed a bug that could occur under very specific circumstances when transferring an effect size from the effect size drawer to the main window.

Changed the behaviour of all tests based on the binomial distribution. This change may lead to alpha values larger than the requested alpha values, but now we have the advantage that the upper and lower limits correspond to actual decision boundaries. Note, however, that the change affects the results only when N is very small. Improvements in the logistic regression module: 1 improved numerical stability in particular for lognormal distributed covariates ; 2 additional validity checks for input parameters this applies also to the poisson regression module ; 3 in sensitivity analyses the handling of cases in which the power does not increase monotonically with effect size is improved: an additional Actual power output field has been added; a deviation of this actual power value from the one requested on the input side indicates such cases; it is recommended that you check how the power depends on the effect size in the plot window.

Fixed a problem in the exact test of Proportions: Inequality, two independent groups uncontional. Fixed a problem in the sensitivity analysis of the logistic regression. The drawers now appear correctly after clicking on the Determine button.

Fixed a problem in the test of equality of two variances. The problem did not occur when both sample sizes were identical. Added an options dialog to the repeated-measures ANOVA which allows a more flexible specification of effect sizes. Fixed a problem in calculating the sample size for Fisher’s exact test. The problem did not occur with post hoc analyses.

Changing the number of covariates now correctly leads to the appropriate change in the denominator degrees of freedom. Renamed the Repetitions parameter in repeated measures procedures to Number of measurements Repetitions was misleading because it incorrectly suggested that the first measurement would not be counted.

Fixed a problem in the sensitivity analysis of the logistic regression procedure: There was an error if Odds ratio was chosen as the effect size. The problem did not occur when the effect size was specified in terms of Two probabilities. This option has been available for some time in the Windows version see View menu. Added procedures to analyze the power of tests for single correlations based on the tetrachoric model, comparisons of dependent correlations, bivariate linear regression, multiple linear regression based on the random predictor model, logistic regression, and Poisson regression.

Added procedures to analyze the power of tests referring to single correlations based on the tetrachoric model, comparisons of dependent correlations, bivariate linear regression, multiple linear regression based on the random predictor model, logistic regression, and Poisson regression. Fixed a problem in the X-Y plot for a range of values for Generic F tests. The degrees of freedom were not properly set in the graph, leading to erroneous plot values.

Fixed problems with distribution plots plots were sometimes not appropriately clipped when copied or saved as metafile; drawing glitches with some very steep curves. The file dialog shown when saving graphs or protocols now uses the user’s home directory myDocuments as defaults directory.

Fixed a serious bug in the CDF routine of the noncentral t distribution introduced in the bugfix release 3. Please update immediately if you installed version 3. Fixed a bug in the function calculating the CDF of the noncentral t-distribution that occasionally led to obviously wrong values when p was very close to 1.

All power routines based on the t distribution were affected by this bug. Fixed a bug in the routine that draws the central and noncentral t distributions for two-tailed tests. Sometimes some of the variables were not correctly set in the plot procedure which led to erroneous values in the graphs and the associated tables. The numerator df value was not always correctly determined in the plot procedure which led to erroneous values in the graphs and the associated tables.

Fixed some minor problems with t tests. The t distribution PDF routine is now more robust for very large degrees of freedom by explicitly using a normal approximation in these cases.

When the Power Plot window was first opened by pressing the X-Y plot for a range of values button, the default was to show 4 plots simultaneously. The default has been changed to 1 plot. Corrected some parsing errors in the calculator in the Mac version, this only concerns text input in normal input fields. In the From variance input mode, the Variance within group field was erroneously labeled Error variance. Fixed a problem with moving the main window when the effect size drawer is open. Sometimes the mouse pointer appeared to be “glued” to the window and the movement could not be stopped properly.

The df1 value was not always correctly determined in the plot procedure which led to erroneous values in the plots. Fixed the problem in the plot procedure that due to rounding errors the last point on the x-axis was sometimes not included in the plot.

There are also corresponding entries in the View menu. The Graph window can now be made resizable. To do this choose “Resizable Window” in the View menu of the Graph window. Besides enabling restricted resizability this option initially shrinks the window to a size that fits into a x screen.

This problem has been fixed. Minor cosmetic changes. New Readme file. Updated installation instruction. HHU Math. Commercial distribution is strictly prohibited. Considerable effort has been put into program development and evaluation, but there is no warranty whatsoever.

Windows Fixed a bug that could occur under very specific circumstances when transferring an effect size from the effect size drawer to the main window. Windows Fixed a problem with moving the main window when the effect size drawer is open. Nach oben.

 
 

 

G*Power – Free download and software reviews – CNET Download.G power download windows

 

Behavior Research Methods , 41 , Fixed a bug in z tests: Generic z test: Analysis: Criterion: Compute alpha : The critical z was calculated incorrectly. Fixed a bug in t tests: Linear bivariate regression: One group, size of slope. Fixed a bug that could occur under very specific circumstances when transferring an effect size from the effect size drawer to the main window. Changed the behaviour of all tests based on the binomial distribution.

This change may lead to alpha values larger than the requested alpha values, but now we have the advantage that the upper and lower limits correspond to actual decision boundaries. Note, however, that the change affects the results only when N is very small. Improvements in the logistic regression module: 1 improved numerical stability in particular for lognormal distributed covariates ; 2 additional validity checks for input parameters this applies also to the poisson regression module ; 3 in sensitivity analyses the handling of cases in which the power does not increase monotonically with effect size is improved: an additional Actual power output field has been added; a deviation of this actual power value from the one requested on the input side indicates such cases; it is recommended that you check how the power depends on the effect size in the plot window.

Fixed a problem in the exact test of Proportions: Inequality, two independent groups uncontional. Fixed a problem in the sensitivity analysis of the logistic regression. The drawers now appear correctly after clicking on the Determine button.

Fixed a problem in the test of equality of two variances. The problem did not occur when both sample sizes were identical. Added an options dialog to the repeated-measures ANOVA which allows a more flexible specification of effect sizes.

Fixed a problem in calculating the sample size for Fisher’s exact test. The problem did not occur with post hoc analyses. Changing the number of covariates now correctly leads to the appropriate change in the denominator degrees of freedom. Renamed the Repetitions parameter in repeated measures procedures to Number of measurements Repetitions was misleading because it incorrectly suggested that the first measurement would not be counted.

Fixed a problem in the sensitivity analysis of the logistic regression procedure: There was an error if Odds ratio was chosen as the effect size. The problem did not occur when the effect size was specified in terms of Two probabilities. This option has been available for some time in the Windows version see View menu. Added procedures to analyze the power of tests for single correlations based on the tetrachoric model, comparisons of dependent correlations, bivariate linear regression, multiple linear regression based on the random predictor model, logistic regression, and Poisson regression.

Added procedures to analyze the power of tests referring to single correlations based on the tetrachoric model, comparisons of dependent correlations, bivariate linear regression, multiple linear regression based on the random predictor model, logistic regression, and Poisson regression.

Fixed a problem in the X-Y plot for a range of values for Generic F tests. The degrees of freedom were not properly set in the graph, leading to erroneous plot values. Fixed problems with distribution plots plots were sometimes not appropriately clipped when copied or saved as metafile; drawing glitches with some very steep curves. The file dialog shown when saving graphs or protocols now uses the user’s home directory myDocuments as defaults directory. Fixed a serious bug in the CDF routine of the noncentral t distribution introduced in the bugfix release 3.

Please update immediately if you installed version 3. Fixed a bug in the function calculating the CDF of the noncentral t-distribution that occasionally led to obviously wrong values when p was very close to 1. All power routines based on the t distribution were affected by this bug. Fixed a bug in the routine that draws the central and noncentral t distributions for two-tailed tests.

Sometimes some of the variables were not correctly set in the plot procedure which led to erroneous values in the graphs and the associated tables. Internet Download Manager.

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