statistical mcq's

Question 1 of 15

True or False: SST = SSA + SSW

 A. True

 B. False

Question 2 of 15 7.0 Points

SST is equal to _____________.

 A. SSA + SSW 

B. SSA - SSW 

C. The sum of squared differences among groups 

D. A and C are correct 

E. B and C are correct 

Question 3 of 15 7.0 Points

SSA would equal _____________.

 A. SST – SSW 

B. SSW + SST 

C. The sum of squares among groups 

D. A and C are correct 

 E. B and C are correct 

Question 4 of 15 7.0 Points

True or False: When doing a one way ANOVA hypothesis test. The alternative hypothesis should always be “all of the population means are NOT the same.”

A. True

 B. False

Question 5 of 15 7.0 Points

You have 4 groups that you are trying to find if there is a difference in any of the population means. In each group there are 7 observations. The given level of significance is an alpha of .005. Your MSA is 3,200 and your MSW is 1,000. Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.

 A. You will reject the null hypothesis 

 B. You will not reject the null hypothesis 

C. The critical value is 5.52 

D. A and C 

E. B and C 

Question 6 of 15 7.0 Points

You have 3 groups that you are trying to find if there is a difference in any of the population means. In each group there are 5 observations. The given level of significance is an alpha of .005. Your MSA is 6,000 and your MSW is 500. Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.

 A. You will reject the null hypothesis 

B. You will not reject the null hypothesis 

C. The critical value is 5.52 

 D. A and C 

 E. B and C 

Question 7 of 15 7.0 Points

What assumptions are necessary for a one-way ANOVA test?

 A. All populations include at least one of the same individual observations 

 B. Sample sizes are the same 

C. Populations have equal variance 

 D. All of the above 

 E. None of the above. 

Question 8 of 15 7.0 Points

True or False: With a Chi-Squared we are able to analyze proportions.

A. True

 B. False

Question 9 of 15 7.0 Points

If we have 2 groups with 3 characteristics each, what would our critical value be with an alpha of .025?

 A. 7.378 

B. 2.773 

C. 12.7062 

D. 5.024 

E. 12.833 

Question 10 of 15 7.0 Points

If we have 4 groups with 2 characteristics each, what would our critical value be with an alpha of .01?

 A. 18.475 

B. 16.812 

 C. 23.337 

D. 26.217 

 E. 11.345 

Question 11 of 15 7.0 Points

If we have 3 groups with 10 characteristics each, what would our critical value be with an alpha of .05? A. 28.869 

 B. 1.9432 

C. 43.773 

D. 14.067 

E. 9.488 

Question 12 of 15 7.0 Points

If we have 5 groups with 2 characteristics each, what would our critical value be with an alpha of .05?

 A. 1.9432 

B. 12.592 

C. 2.0150 

D. 9.488 

Question 13 of 15 7.0 Points

True or False: With a Chi–Square Test for the difference between more than two proportions, the alternative hypothesis should be “All population proportions are NOT equal.”

A. True

 B. False

Question 14 of 15 7.0 Points

True or False: With a Chi–Square Test for the difference between more than two proportions the null hypothesis should be “All population proportions are equal.”

A. True

 B. False

Question 15 of 15 7.0 Points

SST is equal to ____________.

 A. SSA – SSW 

  B. SSW – SSA 

C. The aggregate dispersion of the individual data values around the overall (grand) mean of all factor levels 

D. None of the above 

E. A and C are correct