Reference no: EM133372620

Questions

1. What is the spillover effect of advertising campaign?

a) The ads of your company generate business for your own business

b) The ads of your company generate business for your competitor'

c) The ads of your company generate higher click-through rate for your own business website

d) The ads of your company generate more phone calls for your own business

2. Which of the following method can help you accurately identify the effect of advertising?

a) Compare exposed and unexposed users directly

b) Compare exposed and unexposed users directly and control for demographic variables

c) Compare exposed user's activities before and after the ads campaign

d) Leave a control group which see an alternative & unrelated ads or announcement

3. Why CAN'T we accurately identify the effect of advertising by comparing the activities of user who were exposed to ads and unexposed to ads?

a) The behavior of these two groups are similar.

b) Because these users are very different people. The users who were exposed to ads are more likely to be actively on internet.

c) The characteristics of these two groups are similar.

d) The groups are equally likely to search key words on internet.

4. What is the function "#" used at the beginning of a line in R?

a) Run the codes

b) Make some notes

c) Run special command

d) Insert a variable

5. How to generate a number between 5 and 35 in Excel?

a) RAND()*(35-5)+5

b) RAND()*(35-5)+35

c) RAND()*(35-5)

d) RAND()*35

6. Which of the following codes in Excel can help you generate a binary variable which is either equal to 0 or 1? (Hint: INT() round down the number. You can use Excel to try.)

a) =INT(RAND())+1

b) =INT(RAND()*10)

c) =INT(RAND()*2)

d) =INT(RAND()

7. What happens if you run R code "floor(runif(5, min=10, max=21)"?

a) Randomly draw 5 integers with minimum number 10 and maximum number 22.

b) Randomly draw 5 integers with minimum number 10 and maximum number 20.

c) Randomly draw 10 integers with minimum number 5 and maximum number 21.

d) Randomly draw 20 integers with minimum number 5 and maximum number 10.

8. To conduct a simple regression using R, what is the code if X variable is eduction level; Y variable is productivity; dataset is called df?

a) lm(productivity~eduction, data=df)

b) lm(eduction~productivity, data=df)

c) lm(eduction~productivity+df)

d) lm(productivity~eduction+df)

9. To conduct a multiple regression using R, what is the code if X variables are training, eduction, and age; Y variable is productivity; dataset is called d1?

a) lm(productivity~ training, eduction, age, data=d1)

b) lm(productivity~ training + eduction + age, data=d1)

c) lm(Productivity~ Training+Eduction+Age, data=d1)

d) Im(training + eduction + age~productivity, data=d1)