Case Type: market sizing; estimate or guesstimate.
Consulting Firm: Charles River Associates (CRA) first round full time job interview.
Industry Coverage: Sports, Leisure & Recreation.
Case Interview Question #01346: How many new golf balls would be used in the United States in a given year?
Additional Information:
None
Possible Answers:
This is a typical population-based market sizing case. A strong candidate might start 
by saying that the basic drivers in the United States golf ball market are:
(1) the number of golfers in the U.S.
(2) the number of rounds they play per year, and
(3) the number of golf balls they use per round.
To figure out what that actually means, the candidate will need to make some assumptions.
(1) Assuming there are 320 million people in the United States and that 20% of the population plays golf,