In conclusion, mastering the use of Excel’s TREND and FORECAST functions can significantly enhance your data analysis capabilities.

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Next, have Excel run the regression on the two columns of return data you generated. Under the Data menu, the Data Analysis button allows you to select Regression.

Microsoft Excel can generate trend lines based on data you provide, and in doing do, calculates the equation of the trend line. This equation can be accessed using Excel's built-in Visual Basic tools.

Every base-year trend percentage equals 100 percent. Calculate each year's trend percentage separately for each account and for each section total on the balance sheet.