Just messing around with some linear regression but I'm no data scientist and can't figure it all out with Google. My questions:
1. Do you always check box 'Constant is zero'? Viewing video's I think the answer is "yes" but when I do check the R-squared is 0.042 and when I don't it's 0.721.
2. If I add a second stat the R-squared rises to 0.735 but the P-value from the first stat also goes from 8.33E-06 to 0.090? What does that tell me?
(@mods: If this is the wrong subforum please adjust)
Just messing around with some linear regression but I'm no data scientist and can't figure it all out with Google. My questions:
1. Do you always check box 'Constant is zero'? Viewing video's I think the answer is "yes" but when I do check the R-squared is 0.042 and when I don't it's 0.721.
2. If I add a second stat the R-squared rises to 0.735 but the P-value from the first stat also goes from 8.33E-06 to 0.090? What does that tell me?
(@mods: If this is the wrong subforum please adjust)
I have to laugh. This thread has so much advanced vocabulary that it has effectively shut down the forum for a month. This forum is more likely to answer questions like : Should I chase home dogs on Monday Night Football? than why is the P-value jumping when I add I add second stat? By the way the R-squared seems in line. I actually took a course at the University of San Diego called econometrics that was all about linear regression. R-squared, P-value, and constant = 0 all came up regularly. Unfortunately, I can't recall much from the class, partly because I prefer to work outdoors and not at a computer. Anyhow Charon, good luck finding an answer to your question. Linear regression likely can be used to predict final scores, rushing yards, and a lot of other sports stats. It's just that on Covers, the syatems tend to be a lot more simple.
I have to laugh. This thread has so much advanced vocabulary that it has effectively shut down the forum for a month. This forum is more likely to answer questions like : Should I chase home dogs on Monday Night Football? than why is the P-value jumping when I add I add second stat? By the way the R-squared seems in line. I actually took a course at the University of San Diego called econometrics that was all about linear regression. R-squared, P-value, and constant = 0 all came up regularly. Unfortunately, I can't recall much from the class, partly because I prefer to work outdoors and not at a computer. Anyhow Charon, good luck finding an answer to your question. Linear regression likely can be used to predict final scores, rushing yards, and a lot of other sports stats. It's just that on Covers, the syatems tend to be a lot more simple.
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