Fitting a straight line to a set of data yields the following
prediction line. Complete (a) through (c) below.
Yi=10+3Xi
a. Interpret the meaning of the Y-intercept, b0.
Choose the correct answer below.
A.The Y-intercept, b0=10, implies that the average value
of Y is 10.
B.The Y-intercept, b0=10, implies that when the value of
X is 0, the mean value of Y is 10.
C.The Y-intercept, b0=10, implies that for each increase
of 1 unit in X, the value of Y is expected to increase by 10
units.
D.The Y-intercept, b0=3, implies that when the value of X
is 0, the mean value of Y is 3.b. Interpret the meaning of
the slope, b1.
Choose the correct answer below.
A.The slope, b1=10, implies that for each increase of 1
unit in X, the value of Y is expected to increase by 10
units.
B.The slope, b1=3, implies that for each increase of 1
unit in X, the value of Y is expected to increase by 3
units.
C.The slope, b1=3, implies that the average value of Y is
3.
D.The slope, b1=3, implies that for each increase of 1
unit in X, the value of Y is expected to decrease by 3
units.
C) Predict the mean value of Y for X=3.
Yi= ____
(Simplify your answer.)