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 Probability that fit describes data correctly		  New Topic  Reply to Topic
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swahelian

USA
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Posted - 07/15/2010 :  6:44:22 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
I have fitted a sinus function to a set of data and from the plot it seems like a good fit. The observed (calculated) Chi-square value is 30.5 and the expected Chi-square value is 34.

Are these Chi-square values enough to say something about the probabilty of my fit describing the data correctly, or do I need something else for that?

larry_lan

China
Posts
Posted - 07/15/2010 :  10:10:26 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi:

It's hard to tell. How about r square, p value, etc? Maybe this page can help.

Thanks
Larry
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