Regression

Question 1

scatter plots

Answer 1

a way to visualize the relationship between 2 variables

Question 2

correlation

Answer 2

a way to measure the linear relationship between 2 variables, that takes a value between -1 and +1

Question 3

co variance

Answer 3

this is another way to measure the linear relationship between 2 variables, but is measured in units of the data unlike correlation

Question 4

regression analysis

Answer 4

With regression analysis, the goal is to estimate an equation that characterizes the population relationship between a dependent variable (response variable) and one or more independent variables (predictor or explanatory variables)

Question 5

residual

Answer 5

this is the difference between the actual value and the value that was predicted by the regression equation

Question 6

extrapolation

Answer 6

the process of predicting y for values of x outside the original data range