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The F-ratio is used to determine whether the variances in two independent samples are equal. If the F-ratio is not statistically significant, you may assume there is homogeneity of variance and employ the standard t-test for the difference of means. If the F-ratio is statistically significant, use an alternative t-test computation such as the Cochran and Cox method.
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In analysis of variance the magnitude of the mean differences from one treatment to another will contribute to the numerator of the f-ratio the denominator of the f-ratio both neither?
the numerator of the F-ratio
Is the f distribution negatively skewed?
In general the distribution of F-ratio means what
Possible to obtain a negative value for an F-ratio?
no.
Why do you keep the larger of the two variances in the numerator while calculating f distribution variance ratio?
Off the top of my head, a perfect F-ratio would be 1.00 which is never possible. All F-ratios will be greater than one so the numerator has to be greater than denominator.
What is a difference between F statistics F distribution?
An F-statistic is a measure that is calculated from a sample. It is a ratio of two lots of sums of squares of Normal variates. The sampling distribution of this ratio follows the F distribution. The F-statistic is used to test whether the variances of two samples, or a sample and population, are the same. It is also used in the analysis of variance (ANOVA) to determine what proportion of the variance can be "explained" by regression.
In analysis of variance the magnitude of the mean differences from one treatment to another will contribute to the numerator of the f-ratio the denominator of the f-ratio both neither?
the numerator of the F-ratio
What is an f ratio in statistics?
frequentcy
The F-ratio is a ratio of what?
Applied to focusing lenses and mirrors, including telescopes, binoculars, and cameras, the focal ratio or 'F-number' is (the focal length of the lens or mirror) divided by (its aperture or diameter)
Is the f distribution negatively skewed?
In general the distribution of F-ratio means what
What is F-ratio?
The F-ratio is a statistical ratio which arises as the ratio of two chi-square distributions.If X and Y are two random variables which are independent and approximately normally distributed, then their variances have chi-squared distributions. The ration of these chi-square distributions, appropriately scaled, is called the F-ratio.The F-ratio is used extensively in analysis of variance to determine what proportion of the variation in the dependent variable is explained by an explanatory variable (and the model being tested).
Possible to obtain a negative value for an F-ratio?
no.
What is psa ratio?
I have total psa 0.944 free psa 0.430 what will be the ratio f/t psa = 0.455 ratio. Is it correct please answer
What is the air combat victory ratio of the F-15C?
Answer this question...
Stock gear ratio 2001 ford F-150?
3.55
What would be the focal ratio of a telescope with a 5 aperture and a focal length of 25?
The focal ratio ( 'f' number ) is the ratio of focal length to diameter. For the numbers given in the question, assuming they're both in the same unit, this telescope is a 25/5 = f/5.
F-ratio in econometrics can be expressed as function of R square if one can be expressed as a function of other why do you need both?
The F-ratio can be expressed as a function of the R^2 only under certain assumptions (e.g. linear regression model). There are econometric models where the R^2 is not meaningfully defined or the F-ratio cannot be expressed in terms of the R^2, but you can still carry out an F-test, .
What is the F ratio test and how is it different from Chi square square test?
A F-ratio test compares 2 variances and tell if they are significantly different. A Chi-square test compares count data.
