"Age curve data" refers to data (information) pertaining to demographic statistics based on age, typically used in marketing and social research.

For example, see:

The Age Curve: How to Profit from the Coming Demographic Storm

For years, marketers have held on to unwavering beliefs that have dictated how they market to their consumers. But the hard truth is that the changes we see in marketing and business are based on one undeniable factor--the size of the generations we are selling to. As each generation ages, what they buy and how much they buy will change. Each product and service has a "best customer" that sustains a business. As these customers grow up, the smartest marketers will stay ahead of them--and their money. In The Age Curve, marketing guru Kenneth Gronbach shows executives and entrepreneurs how to anticipate this wave of predictable demand and ride it to success. Using impeccable research, Gronbach reveals how our largest generations, the Baby Boomers and Generation Y, are redefining how we market and how businesses can anticipate their needs more effectively. Complete with entertaining examples of companies like Apple who have perfected their strategies for building a loyal customer base, as well as those who haven't (Levi Strauss and Honda Motorcycle), this book will show readers: how to determine their best customers * how successful companies are earning the loyalty of Generation Y and cultivating allegiance to their products for years to come * why Generation X is a much less valuable market than any of us have been led to believe * and much more Both shocking and compelling, The Age Curve will change the way companies look at their customers and how they market to them.

http://www.amazon.com/Age-Curve-Profit-Coming-Demographic/dp...

--------------------------------------------------
Note added at 15 mins (2010-09-24 16:05:21 GMT)
--------------------------------------------------

Consistent with previous Foundation research, they found that vocabulary knowledge rises substantially between ages 20 and 50, whereas structural visualization and short-term memory decline. A recent book review in Intelligence cited our work in the context of reinterpreting age-curve data published by Warner Schaie, another top investigator of adult cognition.

http://www.jocrf.org/research/dissemination.html

--------------------------------------------------
Note added at 17 mins (2010-09-24 16:07:25 GMT)
--------------------------------------------------

You can actually see a picture of an age curve used in finance here:

http://www.theagecurvereport.com/3-beacon-blog/time-to-profi...