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WhatS Equation For R-Squared Value Given For Chart Trendlines?

April 26, 2017chart equation given r-squared trendlines value

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WhatS Equation For R-Squared Value Given For Chart Trendlines?

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I am using an exponential trendline in an Excel Chart and want to replicate the R-Squared value the chart wizard gives. I know that RSQ would give me this were I dealing with a linear trend. However, with exponential Microsoft Help just says a “transformed regression model”. I was hoping someone could give me the equation, or even better offer a function that calculates it.