Calculate the linear regression, correlation coefficient, and estimate an average for the data set.
distance in meters | heart rate |
---|---|
105 | 142 |
125 | 110 |
115 | 120 |
140 | 98 |
145 | 102 |
160 | 89 |
170 | 72 |
140 | 100 |
130 | 107 |
105 | 113 |
Step 1
In order to create a table that represents this data, click anywhere in ClassPad to bring up the ClassPad menu, and click on the Statistical Data icon.
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Step 2
Enter the data, changing the range to 0–11 (from the bottom to the top.)
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Step 3
To see the calculations for the mean, correlation coefficient, and more, select the data in the table and click Calculation, then Two-Variable in the popup menu.
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Step 4
Change
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Step 5
To see the scatter plot, select the data in the table, click Graph in the pop-up menu and then select Scatterplot.
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Step 6
Again, change
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Step 7
To see the linear regression graph, select the data in the table and click Regression in the pop-up menu. Then select Linear Regression.
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Step 8
A linear regression line should appear on the graph.
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