Trendline, linear regression using

Use of modem spreadsheets such as Excel facilitates the solution of problems of this type, preparation of appropriate plots of the data for visualization, and regression analyses to generate model parameters and the nncertainties associated therewith. The parameter (Cgo - iCpj )k was obtained using the linear trendline and Linest capabilities of Excel. 

Fit these data to an appropriate polynomial form. First, plot the data and successively fit a linear, quadratic, cubic, and quartic trendline, noting the value each time when the no longer improves, use the Excel Regression Add-On to find the parameters and statistical indicators. Verify that the polynomial chosen does indeed satisfy the usual statistical criteria. In all cases, the constant term must be zero since the (0, 0) data point is without error. 

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