1. The data dashboard for a marketing manager may have KPIs related to
a. overall performance of the company’s stock over the previous 52 weeks.
b. current financial standing of the company.
c. current sales measures and sales by region.
d. data on the company's call center.
2. Compute the relative frequencies for students who earned a C shown in the table of grades below.
Grades Number of Students
A 10
B 31
C 36
D 6
83
a. 0.53
b. Not enough information
c. 0.43
d. 0.83
3. Data preparation includes all of the following except which task?
a. identifying erroneous data and outliers
b. calculating the confidence ratio for all association rules
c. defining the appropriate way to represent variables
d. treating missing data
