0
Why do you keep the larger of the two variances in the numerator while calculating f distribution variance ratio?
Wiki User
∙ 16y ago
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.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
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.
What is the formula for calculating variance and standard deviation?
b-a/6
Example of calculating Sales Mix Variance?
SALES MIX VARIANCE= standard sales-revised std sales
What is the variance of the uniform distribution function?
the variance of the uniform distribution function is 1/12(square of(b-a)) and the mean is 1/2(a+b).
Will the sum of two normally distributed random variables be normally distributed if the random variables are independent?
Yes, and the new distribution has a mean equal to the sum of the means of the two distribution and a variance equal to the sum of the variances of the two distributions. The proof of this is found in Probability and Statistics by DeGroot, Third Edition, page 275.
What are adverse variances?
Adverse variances means unfavourable variance which is actual expenses are more than budgted variance.
In the calculation of variances why are they squared?
Try calculating the variance without the squaring bit - it gives 0 every time. Squaring allows you to ignore the direction (sign) of the number.
What are the variances in a 4 variance analysis?
efficiency variance, spending variance, production volume variance, variable and fixed components
Why are variances generally segregated in terms of a price variance and an efficiency variance?
Efficiency Varian materials and direct labor, the variances were recorded in specific general ledger accounts.
Benefits of calculating budget variance?
Budgeted variance analysis is very helpful in controlling the cost and expenditure of products and also helpful in determining the variation in the production expenditure with budgeted expenditure and help to eliminate variances in future and make better budgets.
How is variance used to measure risk?
In finance, risk of investments may be measured by calculating the variance and standard deviation of the distribution of returns on those investments. Variance measures how far in either direction the amount of the returns may deviate from the mean.
Can additive variance have a negative value?
No. Variance is always positive and so the sum of variances must also be positive.
Causes material quantity variance?
causes of labor rate variances
In an analysis of variance which is directly influenced by the size of the sample variances?
df within
In an analysis of variance is SS directly influenced by the size of the sample variances?
Yes it is.
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.
What actions should be taken as a result of stock variances?
Variance should be recorded Stock of Goods Dr. Opening Closing stock variance Cr.
