amca excel regression (guide)
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![Page 1: AMCA Excel Regression (guide)](https://reader036.vdocuments.mx/reader036/viewer/2022082219/545bf578b0af9f12318b45b8/html5/thumbnails/1.jpg)
Computing Regression using Excel
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Make sure you have Data Analysis “Add-In”already in your Excel
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Select Regression
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Select the cells and tick the relevant boxes
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Summary output
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Getting your chart and Regression Line
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Double click on the chart and pull down the options for Charts- select the chart option with the ‘fx’
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You will then get your regression line with the regression equation too.
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Check that your regression variables match with the table that has been generated earlier (see slide 5)
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Forecast
• Substitute the next period ( in this case Yr 9) into the equation and solve
• y = 1024.8x + 292.75• Solve for X=9
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What about MAD
• Go back to your regression generated table
• Look at the section on Residuals• List the values as absolute• Add and then divide by number of periods
to get average (MAD)
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Residuals
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Add the absolute values and divide by number of observations
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