Lab Assignment 4
A sports psychologist believes that
amount of practice is related to performance.
She measures the hours of basketball freethrow practice
time of several players, and then freethrow performance in a
game. The data are
as follows:
Practice Time
# of shots made
1
0
2
1
1
1
3
2
3
2
4
3
4
2 



Use SPSS to compute the regression equation
for the above data. Include
your output file, as well as your answers to the questions
below. After you
input the data choose Regression from the menu, and then Linear.
Remember that the independent variable is the predictor
variable (practice), and the dependent variable is the criterion
variable (shots made).
When using SPSS this time you will enter
the data in separate columns.
Put the Xvariable in the VAR1 column and put the
Yvariable in the VAR2 column.
We do it this way because we have an X and Y value for
each participant in our data.
Write
the equation for the line below that predicts number of shots
made from amount of practice time. (Look at the unstandardized Beta weights for the slope and
yintercept (constant). You
can verify you have the correct values by computing the problem
by hand.
