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Phil 12: Logic and Decision Making (Spring 2011)
Directions and Sample Questions for Final Exam
Part I: Correlation
A. Answer the following multiplechoice questions
1. To make a prediction from a new value of the predictor variable based on a correlation
between two score values, you
a. multiply the Pearson correlation coefficient by the new predictor value and add the
value of the yintercept
b. multiply the new predictor value by the slope of the regression line and add the value of
the yintercept.
c.
divide the new predictor value by the slope of the correlation line and add the value of
the yintercept.
d.
add the new predictor value to the slope of the correlation line and divide by the value
of the yintercept.
2. For SAT scores to be a legitimate factor in determining college admissions
a.
colleges must align their curriculum with the questions used on the SAT
b.
SAT scores must be a direct (proximal) cause of success in college
c.
SAT scores must be a cause (direct or indirect) of success in college
d.
there must be a correlation between SAT scores and success in college
3. The diagram to the right is an example of a
a.
histogram illustrating a lack of
correlation between tobacco and
alcohol
b. scatterplot illustrating a perfect
correlation between tobacco and
alcohol
c.
scatterplot illustrating a positive
correlation between tobacco and
alcohol
d.
histogram illustrating a positive
correlation between tobacco and
alcohol
4. Which of the following choices best explains the concept of an “operational definition”?
a.
It supplies sufficient conditions for a variable
b.
It provides necessary conditions for a variable
c.
It provides necessary and sufficient conditions for a variable
d.
It relates variables used in a hypothesis to measurable variables
5. Using the number of items a person can recall as a measure of memory has high construct
validity if it
a.
does not involve an operational definition of memory
b.
is only employed in a limited range of settings
c.
reliably assigns the same scores to the same individuals on different occasions
d.
actually measures memory
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View Full Document 6. You have found a correlation of 0.42 between two variables in a sample of people. Why do you
need to determine whether the correlation is statistically significant?
a.
there could be a correlation in the sample but none in the actual population
b.
there could be a correlation in the actual population but none in the sample
c.
although there is a correlation, it might not be very important
d.
there may be very different reasons for the correlation in the actual population than in
the sample
7. Which of the following makes no sense?
a.
p < 0.10
b.
r = 0.5
c.
p = 0.05
d.
r = 0.95
8. Suppose that a study set their level of significance at p < 0.01. The probability of rejecting the
null hypothesis when it is in fact true
a.
cannot be determined from the information given
b.
depends upon whether there was a proper control group
c.
is greater than 99%
d.
is less than 1%
9. In doing a test of statistical significance, you will have made a Type II error if you conclude that
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This note was uploaded on 06/07/2011 for the course PHIL 101 taught by Professor Brown during the Spring '08 term at San Diego.
 Spring '08
 Brown

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