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bio website Kormanik.com
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seen Apr 15 at 5:17
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May
21
comment Finding the best two predictor variables used conjointly, and levels of each
You people are geniuses, providing a great deal of insight into answering the question. Problem solved! If you're ever in town be sure to look me up so that I can buy you a beer.
May
18
comment Best way to compare two alternative models
Good response Michael. Thanks much.
May
18
comment Best way to compare two alternative models
Macro, thanks. Your answer is, then, you would use R. And the procedure you would use is you'd write your own code. Hopefully someone with SAS expertise will come forward with an answer.
May
17
comment Best way to compare two alternative models
Yes, I looked over similar questions, but none are exactly as I've asked. Care to contribute an answer? I'd appreciate it.
May
17
comment Finding the best two predictor variables used conjointly, and levels of each
Does anyone here have a familiarity with SAS?
May
17
comment Finding the best two predictor variables used conjointly, and levels of each
The example given at the top of the post posits two predictor variables -- time of day, highway traffic frequency. These two are then taken TOGETHER to predict some response variable. There seems no need for "linear, quadratic, cubic." Why complicate the matter?? Should be simple and straight-forward. Which two of the twenty possible predictor variables, and at what respective levels, used TOGETHER, do the best job in predicting the response? What statistical package seems best to use? What procedure in the package? Please try to explain so that others here can learn from your answer.
May
17
comment Finding the best two predictor variables used conjointly, and levels of each
Predictor variables are not linear -- the oscillation of time (each day) is not linear, but goes in a continuous cycle over and over and over again. Thus oscillator predictor variables pose what to me is a conundrum.
May
17
comment Finding the best two predictor variables used conjointly, and levels of each
Levels of each -- in the example predictor variable provided above, "Time of day," the level would be the time of day -- say, for instance, around 6pm, or, perhaps a range, from 6pm to 6:30pm. (Remember, TOGETHER with another predictor variable and level. Second example given -- when the highway traffic is around 200 cars per minute passing a designated point. Or a range between 175 to 225 cars per minute.)
May
17
comment Finding the best two predictor variables used conjointly, and levels of each
Sample size is approximately 500.