Scatter Plots

Question 1

Bivariate data definition

Answer 1

Data for which there are 2 variables

Question 2

Correlation coefficient definition

Answer 2

• A statistical measure of the degree to which changes to the value of one variable predicts change to the value of another
• It ranges from -1 to 1
• -1 = strongest negative correlation
• 0 = no correlation
• 1 = strongest positive correlation

Question 3

Interpolation definition

Answer 3

• Predicting a variable inside the data range
• It is usually accurate

Question 4

Extrapolation definition

Answer 4

• Predicting a variable outside the data range
• Usually unreliable

Question 5

Linear regression definition