A supermarket mailed 4,000 uniquely identifiable coupons to homes in local residential communities. Each day of the next week, it counted the number of coupons that were redeemed and the size of the...

A supermarket mailed 4,000 uniquely identifiable coupons to homes in local residential communities. Each day of the next week, it counted the number of coupons that were redeemed and the size of the purchase.

(a) Identify whether the data are cross sectional or a time series.

(b) Give a name to each variable and indicate if the variable is categorical, ordinal, or numerical (if a variable is numerical, include its units if possible).

(c) List any concerns that you might have for the accuracy of the data.