In a hypothesis test, if the test statistic is in the rejection region, what does it mean? A. The null hypothesis is accepted. B. The alternative hypothesis is accepted. C. The test is inconclusive. D. A new sample needs to be taken. ...
at the 0.05 level of significance is there evidence that more than 20% of the customers would upgrade to a new cellphone at a reduced cost? the answer is: h0 pi < or equal to 0.20 h1 pi > = 0. 2). What is the test statistic here? Zstat = ?
A statistic can bemore than one type. For example, the samplestandard deviationcan be used as a descriptive statistic to describe thestandard deviationof a sample. It can be used as an estimator: To estimate the population standard deviation. And it can be used to test a theory (ahypothesis...
Welch’s F-test ANOVA Ranked ANOVA Games-Howell pairwise test How does ANOVA work? ANOVA works by analysing the levels of variance within more than two groups through samples taken from each of them. In an ANOVA test you first examine the variance within each group defined by the independent...
Learn how ANOVA can help you understand your research data, and how to simply set up your very first ANOVA test.
(2010). What's the best statistic for a simple test of genetic association in a case-control study? Genet Epidemiol, 34(3), 246-53.C.-L. Kuo and E. Feingold. What's the best statistic for a simple test of genetic asso- ciation in a case-control study? Genetic epidemiology, 34(3...
The Durbin Watson (DW) statistic is a test for autocorrelation in the residuals from a statistical model or regression analysis. The Durbin-Watson statistic will always have a value ranging between 0 and 4. A value of 2.0 indicates there is no autocorrelation detected in the sample. Values fro...
The test of independence, which asks a question of relationship, such as, “Is there a relationship between student gender and course choice?” The goodness-of-fit test, which asks a theoretical question such as, “How well does the coin in my hand match a theoretically fair coin?” ...
A t-test is an inferential statistic used in hypothesis testing to determine if there is a statistically significant difference between the means of two samples.
The ANOVA test lets you compare more than two groups simultaneously to determine whether a relationship exists between them. The result of the ANOVA formula, the F statistic or F-ratio, allows you to analyze several data groups to assess the variability between samples and within samples. ...