Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.


1.

In a
regression and correlation analysis if r^{2} = 1, then a.  SSE =
SST  b.  SSE =
1  c.  SSR =
SSE  d.  SSR =
SST   


2.

If
the coefficient of determination is a positive value, then the regression equation a.  must have a
positive slope  b.  must have a negative slope  c.  could have
either a positive or a negative slope  d.  must have a positive y intercept   


3.

If
the coefficient of correlation is a positive value, then the slope of the regression
line a.  must also be
positive  b.  can be either negative or positive  c.  can be
zero  d.  can not be
zero   


4.

If
the coefficient of determination is 0.81, the coefficient of correlation a.  is
0.6561  b.  could be either + 0.9 or  0.9  c.  must be
positive  d.  must be negative   


5.

If a
data set has SST = 2,000 and SSE = 800, then the coefficient of determination is


6.

If
the coefficient of correlation is a negative value, then the coefficient of
determination a.  must also be
negative  b.  must be zero  c.  can be either
negative or positive  d.  must be positive   


7.

If
the coefficient of determination is 0.9, the percentage of variation in the dependent variable
explained by the variation in the independent variable a.  is
0.90%  b.  is 90%.  c.  is
0.81%  d.  can be any positive value   



Exhibit 141
The following information regarding a dependent
variable (Y) and an independent variable (X) is provided.
SSE = 6
SST =
16


8.

Refer
to Exhibit 141. The MSE is



Exhibit 147
You are given the following information about y and
x.
y  x  Dependent Variable  Independent
Variable  5  15  7  12  9  10  11  7   


9.

Refer
to Exhibit 147. The least squares estimate of b_{1} equals a.  0.7647  b.  0.13  c.  21.4  d.  16.412   



Exhibit 149
A regression and correlation analysis resulted in the
following information regarding a dependent variable (y) and an independent variable
(x).
n = 10
Sx = 55
Sy = 55
Sx^{2} = 385
Sy^{2 }=
385
Sxy = 220


10.

Refer
to Exhibit 149. The point estimate of y when x = 20 is
