In planning both market opportunity and production levels, being able to estimate the size of a market can be important. Suppose a diaper manufacturer wants to know how many diapers a one-month-old baby uses in a year. Which of the following methods would be most appropriate for estimating the market size?
1) Surveying a sample of parents with one-month-old babies
2) Conducting a focus group with parents of one-month-old babies
3) Analyzing sales data from other diaper manufacturers
4) Consulting with pediatricians and child care experts
