For a polynomial equation we do that by using array constants. On an Excel chart theres a trendline you can see which illustrates the regression line the rate of change. We will tabulate our data in two columns.
The y-values were specifically chosen to be inexact to illustrate what you will see when you analyze data from your labs.
In the chart select the trendline equation. Microsoft Office Excel 2003 and earlier versions of Excel. An advantage to using LINEST to get the coefficients that define the polynomial equation is that we can return the coefficients directly to cells. Heres the linear regression formula.