Linear Regression, Correlation Coefficient, and Average for a Data Set Guidance for Casio ClassPad

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.

Step 2

Enter the data, changing the range to 0–11 (from the bottom to the top.)

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.

Step 4

Change $x$ : and $y$ : dropdown boxes to reflect the columns where the data was entered.

Step 5

To see the scatter plot, select the data in the table, click Graph in the pop-up menu and then select Scatterplot.

Step 6

Again, change $x$ : and $y$ : dropdown boxes to reflect the columns where the data was entered.

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.

Step 8

A linear regression line should appear on the graph.