1. The relationship between the number of complaints and the number of weeks before the call is clearly
positive, as the increase in complaints is accompanied by an increase in number of weeks before follow up call.
Answer - (C)
2. The number of complaints made by customers who received a followup call 1 week after placing their orders is closest to
50% of the number of complaints made by customers who received a follow-up call 7 weeks after placing their orders.
Number of customers who received follow up call 1 week after placing order = 30
Number of customers who received follow up call 7 weeks after placing order = approx 58
30/58 = ~52%, closest value in answer choices is 50%.
Answer - (D)
3. Based on the information shown in the graph, if the company wishes to limit its complaints to 40 or fewer per year, it should make follow-up calls no later than
2 weeks after customers place their orders.
Customers who received follow up call at 1 week gave 30 complaints, and customers who received follow up call at 2 weeks gave approx 38-39 complaints. Therefore, to receive less than 40 complaints, follow up call should be made within 2 weeks.
Answer - (C)