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In statistics, R2 (R-squared) indicates how closely a group of graphed points follow a straight line. Points that are closer to each other and the more they form a straight line, indicate a stronger relationship between the data points.
Here is a method you can use to find R2 with Excel:
- List two columns of numbers (need to be the same number of data points in each list).
- Find a location on the worksheet to insert a chart.
- Select the chart wizard and choose the standard XY (Scatter) chart.
- Follow the procedures to create the chart.
- Add a trend line to the chart, following the procedures of modifying the chart.
- Read R2 from the chart.
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