G*Power 3.1.2

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G*Power is a statistical power analysis program. It is a major extension of, and improvement over, the previous version, covering many different statistical tests of the F, t, chi-square, and z test families as well as some exact tests. G*Power 3 provides improved effect size calculators and graphics options, it supports both a distribution-based and a design-based input mode, and it offers five different types of power analyses. Like its predecessors, G*Power 3 is free.

Software OS: MAC OS

Distribution:Freeware

Download size:1.8MB

Renewed:July 15, 2009

Statistics counter:549 / 31 / 10 - DoDownload made 55.8 MB download traffic in the current month and 988.2 MB overall

Cost: free

System specs:Mac OS X 10.4 or later.

User's rating:

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History updates (Complete changelogs since the listing on this site)

3.1.2 [02-17-10]

-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.
-Mac version: The Window menu now contains the option to hide the distributions plot and the protocol section (Hide distributions & protocol menu item) so that G*Power can be accommodated to small screens. This option has been available for some time in the Windows version (see View menu).

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Predicted future versions and notices:

The doDownload.com constantly monitors the update of all programs, including information from the G*Power 3.1.3 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop 3.2.0 version with further advanced features, and soon you will be informed. Equally important 4.0.0 upgrades of the program we will continue to monitor. Full G*Power description has been compared with the overall software database and our algorithm has found the following applications (are showed below).

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