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Analysis of Variance (ANOVA) compares 3 or more means. The t-test would only compare 2 means. Full Answer

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Equal Variance Full Answer

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The F stat tests the equality of variances. It uses statistical tables for reference and is calculated with F = Variance 1 (max)/variance 2(min). Full Answer

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The Fisher F-test for Analysis of Variance (ANOVA). Full Answer

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Error variance is the component of a test score attributable to sources other than the trait or ability measured. Full Answer

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Yes. For some tests, such as the Fisher F-test, the test statistic is an estimate of the variance. If the alpha level was not affected, the test would be no use at all! Full Answer

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When you need to find equal variance. Full Answer

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Variance is basically the raw material of statistics. If you don't have variance (differences in scores) you don't have much to work with or for that matter you don't have much to talk or think about. Consider a test where… Full Answer

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If you know the population variance or if you have a very large sample then you could reliably use a Z test. Otherwise you should use a t test and use s^2 as an estimator for the population variance. Full Answer

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Equality Full Answer

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There may or may not be a benefit: it depends on the underlying distributions. Using the standard normal distribution, whatever the circumstances is naive and irresponsible. Also, it depends on what parameter you are testing for. For comparing whether or… Full Answer

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Both are parametric test. The t-test uses a test statistic that is related to the sample mean(s) and is used to compare that with the mean of another sample or some population. The F-test uses a test statistic that is… Full Answer

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Fisher's F. Full Answer

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Favourable variance is that variance which is good for business while unfavourable variance is bad for business Full Answer

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Sort the array then test adjacent members for equality. Full Answer

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efficiency variance, spending variance, production volume variance, variable and fixed components Full Answer

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There are 7 variances associated with a budget ( which are generally calculated for controlling purposes) 1- Material Price variance 2- Material Quantity variance 3- Labor rate variance 4- Labor efficiency variance 5- Spending variance 6- Efficiency variance 7- Capacity… Full Answer

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Negative price variance is when the cost is less than budgeted. Volume variance is a variance in the volume produce. Full Answer

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One-Way ANOVA is used to test the comparison of 3 or more samples alleviating the risk of having a wrong answer in doing each test separately. ANOVA is an acronym for ANalysis Of VAriance Full Answer

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aids is deadly were a condom dont spread it get a test Full Answer

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I think you mean a Tukey-Kramer test. The spelling is important. The answer to "What is a Tukey-Kramer test" can be found on Wikipedia. Briefly, after you have applied an analysis of variance, it is a method of dissecting the… Full Answer

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Variance is used to add standard deviations when comparing two samples or populations.Variance is simply Std^2.The formula for obtaining Std is dependent on the type of sample taken\ hypothesis test performed i.e. 2-proportion pop/sample, single proportion, poussin, binomial, etc. Full Answer

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When testing the sums of squares of variables which are independently identically distributed as normal variables. One of the main uses of the F-test is for testing for the significance of the Analysis of Variance (ANOVA) or of covariance. Full Answer

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Unequal in Variance Full Answer

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Equal in Variance Full Answer

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Variance Full Answer

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The unaccounted for variance aka Error Variance, is the amount of variance of the dependent variable (DV) that is not accounted for by the main effects/independent variables (IV) and their interactions. Full Answer

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Since Variance is the average of the squared distanced from the mean, Variance must be a non negative number. Full Answer

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There are two different types of equality for Strings - object equality (==) and comparative (compareTo(), equals()). Object equality compares the memory addresses of two Strings, which is probably not what you are looking for. To test for equality, you… Full Answer

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Variance cannot be negative. Full Answer

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The variance is: 1.6709957376e+13 Full Answer