G Power Test. G power can also be used to compute effect sizes and to display graphically the results of power analyses. Power analysis immediately we set g power to test the difference between two sample means.
Let s now redo our sample size calculation with this set of means. G power can also be used to compute effect sizes and to display. Thanks to its 5 000 mah battery the moto g power lasted an epic 16 hours and 10 minutes on our web surfing battery test.
The type of power analysis being performed is noted to be an a priori analysis a determination of sample size.
1 select the statistical test appropriate for your problem. In g power it is fairly straightforward to perform power analysis for comparing means. From there we can input the number of tails the value of our chosen significance level α and whatever power desired. So we see that at a power of 8 we have a sample size of 160 or 40 for each group.
