Sales(InThousands): represents the number sales (in $1000) made in the specified week of December (Week). MarketSize represents the size of the customer base (small, medium, or large market). AgeOfStore represents the age of the store in years. PromotionType represents which promotion the store ran (Promotion 1, 2, or 3. They ran three different promotions for a new product to see which one is more effective.). WeekNumber represents the week in which the promotion ran (Week 1, 2, 3, 4 - captured sales of new product over four weeks). Required:
a. What are the categorical qualitative variables from the ones listed above?
b. What are the numerical (quantitative) variables from the ones listed above.
c. Write the level of measurement (nominal, ordinal, interval or ratio) for each variable.