Which is FALSE for ANOVA ?

Select one:

a. should be used instead of a T-Test if there is one factor with two levels

b. should be used instead of a T-Test if there is more than 1 factor

c. compares the means of each cell with the means of the other cells to see if they are statistically different

d. compares the means of each cell with the means of the other cells to get a p-value for the difference of each pairing

What is a contrast?

Select one:

a. linear combination of variables whose coefficients add up to zero, allowing comparison of different analyses of variance among experimental conditions

b. linear combination of variables whose coefficients add up to one, allowing comparison of different means among experimental conditions

c. linear combination of variables whose coefficients add up to zero, allowing comparison of different means among experimental conditions

d. linear combination of variables whose coefficients add up to one, allowing comparison of different analyses of variance among experimental conditions

What is a false negative for A/B testing?

Select one:

a. results of the exploration stage lead to the belief that options A or B differ in their success, and in reality one is likely to outperform the other in the exploitation stage.

b. results of the exploration stage lead to the belief that neither of the options A or B is more successful than the other, and in reality they are likely to perform the same in the exploitation stage.

c. results of the exploration stage lead to the belief that options A or B do not differ in their success, when in reality one is likely to outperform the other in the exploitation stage.

d. results of the exploration stage lead to the belief that one of the options A or B is more successful than the other, when in reality they are likely to perform the same in the exploitation stage.

What is a false positive for A/B testing?

Select one:

a. results of the exploration stage lead to the belief that options A or B do not differ in their success, when in reality one is likely to outperform the other in the exploitation stage.

b. results of the exploration stage lead to the belief that neither of the options A or B is more successful than the other, and in reality they are likely to perform the same in the exploitation stage.

c. results of the exploration stage lead to the belief that one of the options A or B is more successful than the other, when in reality they are likely to perform the same in the exploitation stage.

d. results of the exploration stage lead to the belief that options A or B differ in their success, and in reality one is likely to outperform the other in the exploitation stage.

What is a fixed horizon in A/B testing?

Select one:

a. an end-point time to analyzing the data

b. a final goal of the A/B test

c. a concrete explanation of the results of an A/B test

d. an end-point time to collecting the data

Which is NOT a key analytics tools for A/B Testing?

Select one:

a. Bayesian statistical test

b. ANOVA

c. t-test

d. cluster analysis