How to do a Linear Regression in WPS Spreadsheet

December 8, 2021
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Graphic skills

Regression, in math, graphs the linear relationship between an independent and a dependent variable, trying to figure out how much one thing depends on another thing.

For example, as light moves through a media, it will become dimmer as it is being extinguished. Absorbance is an expression of the amount of light absorbed by a solution. If we want to check whether there is a linear relationship between concentration and absorbance, how can we achieve it in WPS Spreadsheet?

 

Use WPS Spreadsheet to open the table. As shown below, generally, the x-axis data is above the y-axis data.

Select the area with data. Click the Insert tab > Scatter chart. A scatter graph will be automatically generated.

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Once the graph is built, just right-click on any data point, then a sub-menu will pop up, where you can add Trendline.

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Also, if you want to make your diagram more informative, click Format Chart Area on the right side of the table. And check Display Equation on chart and Display R-squared value on chart.

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P.s. The R² value measures the proportion of variation in the dependent variable explained by the independent variable or how well the regression fits the data and a higher value indicates a better fit. 

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