Rate variances are the same as ________ variances. Efficiency variances are the same as ________ variances.

The term ‘variance’ of the method ‘Analysis of Variance’ means: . A: The method is to compare the difference of population variances B: The method is to compare the difference of sample variances C: The method requires that variances of different groups should be equal D: The method calculates MS and compares MS, while MS is variance in concept E: The method calculates SS and compares SS, while SS is variance in concept

in comparing the means of two independent population , sample are randomly selected from normally distributed populations and population variances are equal, we can use paired t test for the mean difference.

A F-statistic is used to test the hypothesis that: A: two population variances are equal. B: MSE equals 0. C: a z-statistic is greater than 0. D: a z statistic less than a t statistic.

Differences between the master budget and the flexible budget are due to: A: problems of cost control B: poor usage of material and labor C: a combination of price and material variances D: d. actual activity differing from expected activity levels

单因素方差分析的spss结果输出界面，按照顺序，依次看哪些表格的对应结果 A: ANOVA B: 方差齐性检验（Test of Homogeneity of Variances） C: 多重比较（Post Hoc） D: 描述性统计（Descriptives）

An<br/>F test for an analysis of variance (ANOVA) tells us () A: which<br/>of the pairs of treatment groups have means that are significantly<br/>different. B: whether<br/>the variances across the treatment groups are significantly<br/>different. C: whether<br/>there is evidence that at least two of the means across treatment<br/>groups are significantly different. D: whether<br/>the experiment was randomized.