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Author: John Vinturella Article source: http://www.articlesmagazine.com/. Used with author's permission.
A piano tuner recently moved to Buffalo, NY, and would like to assess the business possibilities for him in his new home. He plans to estimate how many piano tuners the greater Buffalo area can support, and compare that to the number listed in the phone book. How do we advise him as to how to estimate the "right" number of tuners for the area?
One approach is simply to guess. Would it be 1, 10, 50, or 100? Are you comfortable with this approach? I am not. An approach I would be comfortable with would be to search for data on estimates of how many piano tuners per capita there are in the U.S., and apply that ratio to the Buffalo area population (let's use 1.3 million). Is data on this likely to be available? Test your resourcefulness by trying to find it.
Assuming that data is not available, we must go to the "some assembly required" approach to estimating, that is, deriving the estimate from data which is available modified by related local and national data, norms, and "rules of thumb." While this seems so indirect as to be little better than just guessing, it can be a very useful exercise. If nothing else, it causes us to identify some important variables and how they relate to our business of interest. The inaccuracies of compounding estimates can be minimized by working in ranges to give us a "ballpark" figure.
How can I derive a meaningful estimate from generally available information? It would be interesting to know what percentage of American households own a piano, and how often they get it tuned. If the data is national, we may need to apply some local adjustment factor. Given the annual number of piano tunings, we can divide by the annual capacity of a tuner to determine how many are needed.
I will do an "off-the-top-of-my-head" calculation to illustrate the method, then leave it to you to provide real values:
Buffalo has about 400,000 households population divided by 3 members average); 8% of American households own pianos. I can think of no reason to apply any local adjustment to this figure, so we are talking about roughly 32,000 pianos. My guess is that two-thirds of all pianos are merely furniture, so that the remainder of about 11,000 are played regularly and in need of tuning. Tuners recommend that a piano be serviced twice a year, but my guess is that the average is probably once a year for active pianos, or 11,000 tunings per year.
A tuner can service 2 to 4 pianos a day; let us say 3 per day, 5 days a week, 50 weeks a year, or 750 tunings per year per tuner. To provide Buffalo's 11,000 annual tunings would require almost 15 tuners. The phone book lists 9. Sounds promising!
How do you like this? How many would you have guessed without this analysis? Does the result seem reasonable? Enough on which to base the opening of a business?
Could it have been done more scientifically? How? Would discussions with piano tuners and music stores have been useful? Are there any journals worth consulting? Would a survey have helped?
Are pianos in places other than homes? Are there tuners not listed in the yellow pages?
The Census of Retail Trade provides the average number of stores per capita for a variety of retail outlets. Based on their data, we can determine how well our proposed market area is served on a relative basis for the type of business we plan to start. For example, there is, on average, a stationery store for every 33,000 people; for every 26,000 people there is one bookstore and one nursery and garden supply store. The population can presumably support a barber shop for every 2,200 residents, and a furniture store for every 3,000. John B. Vinturella, Ph.D. has almost 40 years experience as a management and strategic consultant, entrepreneur, author, and college professor. For 20 of those years, Dr. Vinturella was owner/president of a distribution company that he founded. He is a principal in business opportunity sites jbv.com and muddledconcept.com, and maintains business and political blogs.
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