Guestimating
Basic “Throwaway” Numbers (Booz-Allen & Hamilton) Although it is difficult to prepare for every situation, some ballpark figures often prove invaluable.
- 250M People in the US
- 2.5 People per US household
- 100M US households
- $6T US GDP
- $60,000 Average US household income
You should be able to guess numbers within an order of magnitude. If not, state your assumptions and wait to be corrected. Remember–you are being evaluated on your analysis, not on the quantitative value of your answer.
More Numbers (From a presentation by Price-Waterhouse)
- Telecom: $200B industry (2000)
- Software: $150B
- Media & Publishing: $80B
- Financial Services: $100B
- 2005 there will be a projected 150M users online
Yet More Numbers (From Yale SOM Consulting SIG)
Populations:
- World: 6 Billion
- US: 275 M
- Japan: 130 M
- France: 60 M
- UK: 60 M
- India: 1 Billion
- New York City: 12 M
Basic US Demographics
- Median age (1998): 35 years
- Over 65 (1990 Census): 13%
- Under 18 (1990 Census): 26%
- Unemployment rate: ~5%
- Male/Female ratio: 50/50