Rate variances are the same as ________ variances. Efficiency variances are the same as ________ variances.
举一反三
- 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）