[donna]

But, you left out the fact that Elvis was forbidden by many parents. And, that kids did not have buying power in the 50’s.

[ETL]

you left out the fact that Elvis was forbidden by many parents.

Lol! One can hardly compare what Elvis did on stage to what Jackson did.

ie:
http://www.freerepublic.com/focus/news/2293792/posts?page=29#29

[Einigkeit_Recht_Freiheit]

But, you left out the fact that Elvis was forbidden by many parents. And, that kids did not have buying power in the 50’s.

Interesting point. I didn't give it that much thought since there are more relevant things to consider like the fact that Obama throws like a girl.

It would be difficult to quantify and account for the fact that some parents might have forbidden Elvis. A survey perhaps - but what would be the parameters? But, the purchasing power issue would indeed by subject to a legitimate estimate that could be incorporated into a model. That coefficient would make an enormous difference for comparison purposes.

To take it a step further, one might also try and accommodate differences in the overall number of choices available as well. I mean, if Elvis is 1 of 50 and Jackson 1 of 100 artists that might also make a difference due to level of competition. Actually this is a fun thought exercise. Look forward to your additional feedback.