Double-click the trendline equation or R-squared text.Method 2: Microsoft Office Excel 2003 and earlier versions of Excel In the Category list, click Number, and then change the Decimal places setting to 30 or less.Right-click the trendline equation or the R-squared text, and then click Format Trendline Label.Open the worksheet that contains the chart.To display a greater number of digits, use one of the following methods: Method 1: Microsoft Office Excel 2007 The trendline equation and R-squared value are initially displayed as rounded to five digits. This article explains how to display more digits in the coefficients. For some purposes, this may not be a sufficient number of significant figures. When you add a trendline to a chart, and then display the equation and R-squared value for the trendline, the equation shows only the first five digits of each coefficient.
