sales vol. variance= standard price(actual sales vol.- std sales vol.)
eg.- A= 10(35000-20000)=150000(F)
B=6(25000-30000)= 30000(A)
F-A= 150000-30000=120000
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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).
INFERENCES Any calculated number from a sample from the population is called a 'statistic', such as the mean or the variance.
actual budget/budget = variance%
Square the standard deviation to obtain the variance. The variance is 62 or 36.
A mix of linear regression and analysis of variance. analysis of covariance is responsible for intergroup variance when analysis of variance is performed.