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2. G*Power - Wikipedia

   en.wikipedia.org/wiki/G*Power

   G*Power is a free-to use software used to calculate statistical power. The program offers the ability to calculate power for a wide variety of statistical tests including t-tests, F-tests, and chi-square-tests, among others. Additionally, the user must determine which of the many contexts this test is being used, such as a one-way ANOVA versus ...

3. PS Power and Sample Size - Wikipedia

   en.wikipedia.org/wiki/PS_Power_and_Sample_Size

   The program can generate graphs of the relationships between power, sample size and the detectable alternative hypothesis. It can plot graphs of any two of these variables while holding the third constant. Linear or logarithmic axes may be used and multiple curves can be plotted on each graph. Graphs may be copied and pasted into other ...

4. Sample size determination - Wikipedia

   en.wikipedia.org/wiki/Sample_size_determination

   Sample size determination or estimation is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample size used in a study is usually determined ...

5. Power of a test - Wikipedia

   en.wikipedia.org/wiki/Power_of_a_test

   Power of a test. In statistics, the power of a binary hypothesis test is the probability that the test correctly rejects the null hypothesis ( ) when the alternative hypothesis ( ) is true. It is commonly denoted by , and represents the probability of a true positive detection of an effect or an association between variables, conditional on the ...

6. PASS Sample Size Software - Wikipedia

   en.wikipedia.org/wiki/PASS_Sample_Size_Software

   PASS Sample Size Software. PASS is a computer program for estimating sample size or determining the power of a statistical test or confidence interval. NCSS LLC is the company that produces PASS. NCSS LLC also produces NCSS (for statistical analysis). PASS includes over 920 documented sample size and power procedures.

7. List of statistical software - Wikipedia

   en.wikipedia.org/wiki/List_of_statistical_software

   Regression Analysis of Time Series (RATS) – comprehensive econometric analysis package. Rguroo Statistical Software - An online statistical software designed for teaching and analyzing data. S-PLUS – general statistics package. SAS (software) – comprehensive statistical package. SHAZAM (Econometrics and Statistics Software ...

8. Coupon collector's problem - Wikipedia

   en.wikipedia.org/wiki/Coupon_collector's_problem

   Coupon collector's problem. In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more ...

9. Always (brand) - Wikipedia

   en.wikipedia.org/wiki/Always_(brand)

   Always is an American brand of menstrual hygiene products, including maxi pads, ultra thin pads, pantyliners, disposable underwear for night-time wear, and vaginal wipes.A sister company of Procter & Gamble, it was first invented and introduced in the United States in 1983 by Tom Osborn, a mid-level employee at Procter & Gamble, then nationally in May 1984.