sinusoidal regression

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Jul 1, 2015, 11:14:51 AM7/1/15

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What am I missing to get the sinusoidal regression here?

Radian mode, Analyze, Regression, Show Sinusoidal gives me this:

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Jul 1, 2015, 2:59:33 PM7/1/15

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Try giving it an initial period.

John Hanna

T³ - Teachers Teaching with Technology

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Jul 1, 2015, 3:18:12 PM7/1/15

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How do I do that on the Data and Statistics Page? I tried that on a Calculator Page and made the graph on a Graphs page and got the same result.

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Jul 1, 2015, 3:27:55 PM7/1/15

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You don’t get the options from a D&S page. Do the regression in the spreadsheet so that the result is ‘live’ and try a period of 140.

John Hanna

T³ - Teachers Teaching with Technology

the wind is free

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Jul 2, 2015, 6:07:41 PM7/2/15

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Can you share the data for us?!

Thank you!
Csaba

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