Regression and normal distribution

Normal distribution

What distribution does linear regression assume for the errors?

Mean

What does a regression line model the change in?

Mean of the errors

What value are regression errors assumed to centre on?

Standard deviation of the errors

What spread do the errors share at every predictor value?

Intercept

What is the baseline term in a regression equation?

Slope

What is the change in the outcome per one-unit increase in the predictor?

Observed minus predicted

How is a residual calculated?

Error term

What does the random part of the regression equation represent?

Random error

What does the error term model, as opposed to the change in the mean?

Linear term

What part of a regression equation models the change in the mean?

Same standard deviation at every predictor value

What does homoscedasticity mean?

Homoscedasticity

What is it called when the scatter of the residuals is constant?

Heteroscedasticity

What is it called when the scatter of the residuals changes across the predictor?

Linearly

How is the mean assumed to change with the predictor?