Suppose you have variables X and Y and you attempted to regr

Suppose you have variables X and Y, and you attempted to regress Y on X (i.e., predict Y from X). If you add 10 to the value of every Y data point, what will happen to the equation of the best fitting line through your points?

answers

a. the slope and intercept would increase by 10

b. slope increase by 10 intercept doesnt increase

c.intercept increase by 10 no change in slope

d. slope and intercept no change

Solution

c. Intercept increases by 10, no change in the slope. This is because there is no relative change between the data points but there is an absolute one.