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Research Methods
Exercise 7
Due Monday, December 3
Correlation, ANOVA (oneway and factorial), Chi square (goodness of fit test and test of
association)
To examine relationships or association between two variables, which statistical test is conducted?
The following questions refer to characteristics of a simple (bivariate) correlation:
a) What is the range of values that a correlation coefficient can possibly assume?
1 to 1
b) What does the sign of a correlation coefficient indicate?
examines whether a pos/neg
relationship exists
c) What can be inferred about the relationship between two variables when there is a positive
correlation?
As one variable increases, the other variable
increases
.
d) What can be inferred about the relationship between two variables when there is a negative
correlation?
As one variable increases, the other variable
decreases
e) What does the magnitude of a correlation coefficient reveal?
the strength of the relationship
For each of the following pairs, indicate which is the stronger correlation:
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This note was uploaded on 04/15/2008 for the course CO 259 taught by Professor Herbeck during the Fall '08 term at BC.
 Fall '08
 Herbeck

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