A: t-test
B: ANOVA
C: Chi-square
D: Rank test
举一反三
- 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.
- Analysis of variance (ANOVA) models test hypotheses about the population variance.
- An analyst does research about hypothesis testing. Which of the following test statistics is most appropriate test statistics for two means based on samples that we believe are dependent A: T-test. B: F-test. C: Chi-square test.
- Analysis of Variance (ANOVA) is a test for the difference in . A: means of two or more samples B: means of three or more samples C: vairance of three or more smaples D: means of two or more populations E: variance of two or more populations
- When we test instrument relevance in practice, we can A: use the residual from the 2nd stage of the 2SLS B: use the residual from the true model C: apply significance test on the 1st stage of the 2SLS D: none of the above.
内容
- 0
Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesised value for µ:
- 1
采用SPSS统计分析软件进行简单样本的T检验时,分析选项是( ) A: Analyze→Compare means → Paired-Samples T test B: Analyze→Compare means → One-Way ANOVA. C: Analyze→Compare means → Independent-Samples T test D: Analyze→Compare means → One-Samples T test
- 2
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.
- 3
In a test of the mean of a population, if the population variance is: A: known, a z- distributed test statistic is appropriate. B: known, a t- distributed test statistic is appropriate. C: unknown, a z -distributed test statistic is appropriate.
- 4
Analysis of variance uses the ( ) test A: z B: f C: chi-square D: F