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Return to Explorations: Conducting Empirical Research in Canadian Political Science 4e Student Resources
Chapter 12 Self-Grading Quizzes
Describing the Political World: Quantitative Analysis
Quiz Content
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The ______ represents the most frequently occurring value in a distribution of scores.
median
correct
incorrect
mode
correct
incorrect
mean
correct
incorrect
none of the above
correct
incorrect
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Some statistical tests, such as Pearson's r, require that you make certain assumptions about the nature of the data. These are known as:
multivariate tests
correct
incorrect
non-parametric tests
correct
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parametric tests
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incorrect
proportional reduction of error tests
correct
incorrect
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A report says that 785 respondents agreed with carbon taxes as a policy, while 56% were supportive of incentives for low-emissions vehicle purchases. In this case, the first number is a _______________ and the second number is a _____________.
Cumulative frequency; raw frequency
correct
incorrect
Relative frequency; cumulative frequency
correct
incorrect
Frequency table; relative frequency
correct
incorrect
Raw frequency; relative frequency
correct
incorrect
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The variation ratio, the interquartile range, and the standard deviation are all measures of _________.
association
correct
incorrect
description
correct
incorrect
dispersion
correct
incorrect
central tendency
correct
incorrect
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Understanding the size and direction of the relationship is very important to assessing the _________ variables.
association between
correct
incorrect
dispersion of
correct
incorrect
central tendency of
correct
incorrect
causal nature of
correct
incorrect
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The proportional reduction in error is a way of assessing the extent to which taking into account the ___________ helps us predict the value on the _________.
Dependent variable; independent variable
correct
incorrect
Control variable; dependent variable
correct
incorrect
Independent variable; dependent variable
correct
incorrect
Intervening variable; independent variable
correct
incorrect
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If we have a bivariate relationship between a nominal-level variable and an ordinal-level variable, we select a measure of association appropriate for ______.
nominal-level data
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incorrect
ordinal-level data
correct
incorrect
interval-level data
correct
incorrect
none of the above
correct
incorrect
*
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In order to produce a regression line for a basic linear regression, you would use the _____________.
Ordinary least squares method
correct
incorrect
Pearson's r
correct
incorrect
Lambda
correct
incorrect
Cramer's v
correct
incorrect
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The intercept measures the value of Y when X is equal to _________, while the _______ is the amount of change in Y for every change in X.
0; slope
correct
incorrect
Y; rise
correct
incorrect
1; slope
correct
incorrect
none of the above
correct
incorrect
*
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Although a regression line is designed to fit the data as closely as possible, there will always be some __________ that variation in X cannot explain.
slope
correct
incorrect
unexplained variance
correct
incorrect
outliers
correct
incorrect
error
correct
incorrect
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The type of statistics that can be used to understand what the actual value in the population is are called descriptive statistics.
True
correct
incorrect
False
correct
incorrect
*
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Multivariate statistics are used to understand two variables at a time.
True
correct
incorrect
False
correct
incorrect
*
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The most common measure of central tendency with interval-ratio variables is the arithmetic mean.
True
correct
incorrect
False
correct
incorrect
*
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The standard deviation is the most common measure of average deviation from the mode.
True
correct
incorrect
False
correct
incorrect
*
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One purpose of
z
-scores is to try to standardize the base of comparison between groups.
True
correct
incorrect
False
correct
incorrect
*
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Measures of association at the nominal level typically range from 0 to 1, while at the ordinal and interval levels the typical range is from –1 to +1.
True
correct
incorrect
False
correct
incorrect
*
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Cramer's V, gamma, lambda, tau-b, and tau-c are all PRE measures of association.
True
correct
incorrect
False
correct
incorrect
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