Question

What are the two types of variances which can occur in your data? ANOVA and ANCOVA/Experimenter and participant/Between and within group/Independent and confounding. What test statistic is used to test the hypothesis in ANOVA? Mann Whitney/Chi square/R ratios/F test (score). How many dependent variables must you have for an ANOVA to be conducted? 3 ratio variables/2 nominal variables/Only 1 continuous or interval scale variable/None of these. Which of the following assumptions must be met to use an ANOVA? There is homogeneity of variance/Random sampling of cases must have taken place/There is only one dependent variable/All of these. What must a Levene's test be in order to use an ANOVA? Significant at sig (p) < 0.001/Non-significant at or above sig (p) > 0.05/Significant at sig (p) < 0.01/Non-significant at sig (p) < 0.001. What two pieces of information on ANOVA output will help decide whether to reject (or failure to reject) the null hypothesis? Descriptive statistics box/ The Sig. column and F-value column of the ANOVA table/The Sig. column of the Levene's test/The Sig. column of the multiple comparisons. What would you use to determine whether significant differences were observed between any or all levels of your independent variable? Box-plots/F statistic/Post-hoc tests/Histograms. What must you include when reporting an ANOVA? P value/F statistic/Degrees of freedom/All of these. How many dependent variables are there in a two-way ANOVA? 5/4/1/2. Analysis of variance is a statistical method of finding differences in ________ of several populations. standard deviations/variances/means/proportions/none of the above. The ________ sum of squares measures the variability due to individual differences, experimental error, and effect of treatment. Between Groups/Within group/Interaction/Total. Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments? Dependent variable(s) is normally distributed/The samples are randomly selected and are independent from all other samples/Groups have equal variances/All of the above. As variability due to chance (SS within) decreases, the value of F will/Increase/stay the same/decrease/can't tell from the given information. If the group means were identical (yes, this is extremely unlikely), what would be the observed value of F-score? 1.0/0.0/A value between 0.0 and 1.0 d. A negative value/Infinite. A marketing manager wishes to test for differences in mean sales for three stores during holiday season. The significance level for the test will be 0.05. The null hypothesis for this analysis is: H0 = Not all store sales have the same mean./H0 = least one of the store sales has a different mean./Ho= Mean 1= Mean 2= Mean 3/None of these.

Answer 1

1) The types of variances occur in our data: Between and within groups.

2) test statistic is used to test the hypothesis in ANOVA is F test (score).

3) Only 1 continuous dependent variables must you have for an ANOVA to be conducted.

4) Assumptions must be met to use an ANOVA are (a) There is homogeneity of variance

b)Random sampling of cases must have taken place.

c) There is only one dependent variable

5)Levene's test must be Non-significant at or above sig (p) > 0.05

6) Two pieces of information on ANOVA output will help decide whether to reject (or failure to reject) the null hypothesis the Sig. column and F-value column of the ANOVA table.

7) Post Hoc use to determine whether significant differences were observed between any or all levels of your independent variable.

8) P value

F statistic

Degrees of freedom

9) One dependent variables are there in a two-way ANOVA.

10)Analysis of variance is a statistical method of finding differences in means of several populations.

11)  The between group sum of squares measures the variability due to individual differences, experimental error, and effect of treatment.

12) the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatmentsare

Dependent variable(s) is normally distributed, the samples are randomly selected and are independent from all other samples and Groups have equal variances.

13) As variability due to chance (SS within) decreases, the value of F increases.

14) the observed value of F-score  A value between 0.0 and 1.0.

15) A marketing manager wishes to test for differences in mean sales for three stores during holiday season. The significance level for the test will be 0.05. The null hypothesis for this analysis is Ho: Mean 1= Mean 2= Mean 3