Choose a data set on the first tab below, then click the other tabs to view or manipulate the data, see summary statistics including the correlation and equation of the least-squares regression line, or view a scatterplot or residuals plot of the data.
Click the "Quiz Me" button to complete the activity.
Statisticians are often interested in changes in a variable, or relationships among several variables. This applet describes straight-line relationships between two variables using the methods of correlation and regression.
Choose "User-entered data" as the dataset, then enter the following pairs of values for Column A (x) and Column B (y):
Enter the following statistics for this dataset (accurate to within 2 decimal places):
Now fill in the following values regarding the correlation and regression line for these two variables: