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.
![](../../embeds/284bd12e/classpad-image-(1).png)
Step 2
Enter the data, changing the range to 0–11 (from the bottom to the top.)
![](../../embeds/c6d00a66/image-(154).png)
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.
![](../../embeds/b3e0f5f4/image-(155).png)
Step 4
Change
![](../../embeds/509d0b76/image-(156).png)
Step 5
To see the scatter plot, select the data in the table, click Graph in the pop-up menu and then select Scatterplot.
![](../../embeds/2811638e/image-(157).png)
Step 6
Again, change
![](../../embeds/0f392ebf/image-(158).png)
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.
![](../../embeds/12ab058e/image-(159).png)
Step 8
A linear regression line should appear on the graph.
![](../../embeds/9d1335c1/image-(160).png)