Lab Assignment 3
A sports psychologist believes that
amount of practice is related to performance.
She measures the hours of basketball free-throw practice
time of several players, and then free-throw performance in a
game. The data are
# of shots made
Test whether practice time is related to
#of shots made using SPSS to conduct Person Correlation
Coefficient. Use the information from the output to complete the
hypothesis test. Be
sure to turn in both your output file, and your answers to the
1: Write the null and
research hypotheses in words
2: Find the critical
Set alpha = .05
Compute the appropriate test statistic (just insert the
correlation you found with SPSS.
You can double check the answer with your own computation
if you like)
4: Make a
decision about the null. Reject
or Fail to Reject.
Describe the relationship between practice time and #of
When using SPSS this time you will enter
the data in separate columns.
Put the X-variable in the VAR1 column and put the
Y-variable in the VAR2 column.
We do it this way because we have an X and Y value for
each participant in our data.
To compute the correlation just
select Analyze from the menu at the top, then select correlate.
Choose the Bivariate option.
Pearsonís correlation should be checked as the default.
You might want to save your data since we will be using
these same data for Lab #4.