An F-test is a statistical test that compares variances. It is used to determine if the variances of two samples, or if the ratios of variances among multiple...

Test Card F is a test card that was created by the BBC and used on television in the United Kingdom and in countries elsewhere in the world for more than...

California F-scale is a 1947 personality test designed by German Theodor W. Adorno and others to measure the "authoritarian personality". The F stands for...

an F-test of equality of variances is a test for the null hypothesis that two normal populations have the same variance. Notionally, any F-test can be...

and testing led to expensive design changes and retrofits. As of July 2024[update], the average flyaway costs per plane are: US$82.5 million for the F-35A...

the group means are likely different. This comparison is done using an F-test. The underlying principle of ANOVA is based on the law of total variance...

Student's t-test is a statistical test used to test whether the difference between the response of two groups is statistically significant or not. It...

November 2016). "F-22, F-35 Outsmart Test Ranges, AWACS". Breaking Defense. Williams 2002, p. 10. Goebel, Greg. "The Lockheed Martin F-22 Raptor." Archived...

A chi-squared test (also chi-square or χ2 test) is a statistical hypothesis test used in the analysis of contingency tables when the sample sizes are large...

from the same distribution H 0 : F = G {\displaystyle H_{0}:F=G} . Under the null hypothesis, the distribution of the test statistic is obtained by calculating...

example is the F-test in the analysis of variance. There can be legitimate significant effects within a model even if the omnibus test is not significant...

noteworthy that partitioning variability reduces degrees of freedom from the F-test, therefore the between-subjects variability must be significant enough to...

In statistics, the Kolmogorov–Smirnov test (also K–S test or KS test) is a nonparametric test of the equality of continuous (or discontinuous, see Section...

as the null distribution of a test statistic, most notably in the analysis of variance (ANOVA) and other F-tests. The F-distribution with d1 and d2 degrees...

The TestDaF, formally Test Deutsch als Fremdsprache ("Test of German as a foreign language"), is a standardised language test of German proficiency for...

switched to the Philips PM5544, Test Card F and the Telefunken FuBK test cards in the 1970s. Test Card D was a television test card first broadcast on 5 May...

significantly skewed, the Kruskal-Wallis test is more powerful at detecting differences among treatments than ANOVA F-test. On the other hand, if the population...

flexural test provides values for the modulus of elasticity in bending E f {\displaystyle E_{f}} , flexural stress σ f {\displaystyle \sigma _{f}} , flexural...

test, namely the likelihood-ratio test and the Lagrange multiplier test (also known as the score test). Robert F. Engle showed that these three tests...

U} test (also called the Mann–Whitney–Wilcoxon (MWW/MWU), Wilcoxon rank-sum test, or Wilcoxon–Mann–Whitney test) is a nonparametric statistical test of...

Test statistic is a quantity derived from the sample for statistical hypothesis testing. A hypothesis test is typically specified in terms of a test statistic...

A/B testing (also known as bucket testing, split-run testing, or split testing) is a user experience research method. A/B tests consist of a randomized...

The Wilcoxon signed-rank test is a non-parametric rank test for statistical hypothesis testing used either to test the location of a population based...

f ( x ) . {\displaystyle f(x).} Instead of acting on points, distribution theory reinterprets functions such as f {\displaystyle f} as acting on test...

of prospective employees for a range of occupations. The test was created in 1939 by Eldon F. Wonderlic. It consists of 50 multiple choice questions to...

technology demonstrator, the test data from which validated the concept. On 1 November 1978, Lockheed decided to proceed with the F-117 development program...

Granger-cause Y if it can be shown, usually through a series of t-tests and F-tests on lagged values of X (and with lagged values of Y also included)...

only two means to compare, the t-test and the F-test are equivalent; the relation between ANOVA and t is given by F = t2. An extension of one-way ANOVA...

used in Z tests or in any other tests derived from the normal distribution, such as t tests, F tests and chi-squared tests. If the residuals are not normally...

MANCOVA, ordinary linear regression. Within this framework, both t-test and F-test can be applied. The general linear model is a generalization of multiple...