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

When the sample sizes are equal, the pooled variance of the two groups is the average of the two sample variances.

Analysis<br/>of Variance is a test for equality of () A: Variances. B: Means. C: Proportions. D: only<br/>two parameters. E: distributions.

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.