Question 1
Draw the scatter plot.
Describe the relationship. (Three characteristics)
Find the regression line.
Predict the value for the lowest and highest x value in the data set.
Use your answers to draw the regression line on your scatter plot.
Find the correlation coefficient.
What does it tell you?
Does it agree with the description from the graph? If no, why?
Find the coefficient of determination.
What does it tell you?
Test to see if the correlation is significant at the 0.05 level.
Question 2
Draw the scatter plot.
Describe the relationship. (Three characteristics)
Find the regression line.
Predict the value for the lowest and highest x value in the data set.
Use your answers to draw the regression line on your scatter plot.
Find the correlation coefficient.
What does it tell you?
Does it agree with the description from the graph? If no, why?
Find the coefficient of determination.
What does it tell you?
Test to see if the correlation is significant at the 0.01 level.