![]() The "new_x" values are in cells A24:C24, where B24 and C24 are the formulas as shown. The "known_y" values are in green in E3:E22 The "known_x" values are in green in A3:C22 This chart plots both the X axis and Y axis as values. NOTE The trendline formula is used for an XY Scatter chart. R-squared value measures the trendline reliability - the nearer R2 is to 1, the better the trendline fits the data. 11 Is there an easy way to apply the trend line formula from a chart to any given X value in Excel For example, I want to get the Y value for a given X 2,006.00. Solution First, note that the slope is the coefficient in front of the x. Trendline equation is a formula that finds a line that best fits the data points. If you change the values in E3:E22, the trend() function will update Cell E24 for your new input at Cell A24.Įdit = y 25142 + 14329x Interpret the slope of the regression line in the context of the study. The trend() formula is in Cell E24 where the cell references are shown in red.Ĭell A24 contains the new X, and is the cell to change to update the formula in E24Ĭell B24 contains the X^2 formula (A24*A24) for the new XĬell C24 contains the X^3 formula (A24*A24*A24) for the new X ![]() This will reduce my if and Vlookup formula from 1 page to a few lines, and will be more simple to debug. ![]() Column C is X^3 (two cells to the left cubed). Hans Vogelaar I finally took a good look at the trendline & formula and got to use the polynomial formula y index (linest (.) and believe I can solve my problem. Column B is X^2 (the cell to the left squared). ![]() Try trend(known_y's, known_x's, new_x's, const).Ĭolumn A below is X. ![]()
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