Unit 7 - Correlation + Regression : Scatter Graphs

Question 1

Interpolation

Answer 1

When you use the line of best fit to predict values within the range of known data → more reliable

Question 2

Extrapolation

Answer 2

When you use the line of best fit to predict values outside the range of known data → less reliable (dont know if trend continues)

Question 3

Confounders

Answer 3

Just because two values have a correlation doesn’t mean they have causation - third variable (confounder)