Module 7 Correlational Analysis and |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Linear Regression exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answes
___ is performed to measure and describe how two quantitative variables are related - correct
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answersCorrelational analysis
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Correlational analysis is performed when variables are observed in their ___ rather than being |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
manipulated in a study - correct answersobserved in their natural state |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
___ describes the direction of a relationship, form of a relationship (linear, curvilinear,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
quadratic, or cubic), and the degree of a relationship. - correct answersCorrelation |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
___ describes the direction of the linear relationship between two variables - correct
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answersCovariance
If two variables covary, one of two directions exist in the plot of variables:
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1. |||\\\
2. - correct answers1. Both variables increase or decrease together.
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OR
2. As one variable increases the other decreases
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Covariance does not imply __ - correct answersCovariance does not imply causation |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
___ is a limitation of correlational studies, however, correlation being established is the first
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step in determining ___ - correct answersCausation, causality
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, The most common ways correlations are represented graphically are with ___, a graph in which
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two measurements are obtained from each individual in the study and paired variable scores
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are plotted as coordinate pairs. - correct answersscatterplots
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In scatterplots, the independent variable is on the ___ and the dependent variable is on the __
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- correct answersIn scatterplots, the independent variable is on the x-axis and the dependent
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variable is on the y-axis. |||\\\ |||\\\ |||\\\ |||\\\
In scatterplots, the independent variable is called the ___ and the dependent variable is called
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the __ - correct answersexplanatory, response
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A linear relationship describes when plotted pairs ___ - correct answersapproximate a straight
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line
A positive correlation indicates - correct answersthat both variables are increasing together
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A negative correlation indicates - correct answersthat an increase in the explanatory variable
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results in a decrease in response variables |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
No correlation indicates - correct answersThere is no relationship between two variables, on a
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scatterplot points are spread out and do not resemble a straight line. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
When values of two variables appear to be related, but the relationship does not follow a
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
linear pattern, this is called a ___ relationship - correct answersnonlinear or curvilinear
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relationship (for example exponential relationship) |||\\\ |||\\\ |||\\\ |||\\\
The ___, Pearson's r, measures the degree of linear relationship or consistency of the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relationship - correct answerscorrelation coefficient |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Linear Regression exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answes
___ is performed to measure and describe how two quantitative variables are related - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answersCorrelational analysis
|||\\\ |||\\\
Correlational analysis is performed when variables are observed in their ___ rather than being |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
manipulated in a study - correct answersobserved in their natural state |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
___ describes the direction of a relationship, form of a relationship (linear, curvilinear,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
quadratic, or cubic), and the degree of a relationship. - correct answersCorrelation |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
___ describes the direction of the linear relationship between two variables - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answersCovariance
If two variables covary, one of two directions exist in the plot of variables:
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
1. |||\\\
2. - correct answers1. Both variables increase or decrease together.
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OR
2. As one variable increases the other decreases
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Covariance does not imply __ - correct answersCovariance does not imply causation |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
___ is a limitation of correlational studies, however, correlation being established is the first
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
step in determining ___ - correct answersCausation, causality
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, The most common ways correlations are represented graphically are with ___, a graph in which
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
two measurements are obtained from each individual in the study and paired variable scores
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
are plotted as coordinate pairs. - correct answersscatterplots
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
In scatterplots, the independent variable is on the ___ and the dependent variable is on the __
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
- correct answersIn scatterplots, the independent variable is on the x-axis and the dependent
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
variable is on the y-axis. |||\\\ |||\\\ |||\\\ |||\\\
In scatterplots, the independent variable is called the ___ and the dependent variable is called
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the __ - correct answersexplanatory, response
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
A linear relationship describes when plotted pairs ___ - correct answersapproximate a straight
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
line
A positive correlation indicates - correct answersthat both variables are increasing together
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
A negative correlation indicates - correct answersthat an increase in the explanatory variable
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
results in a decrease in response variables |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
No correlation indicates - correct answersThere is no relationship between two variables, on a
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
scatterplot points are spread out and do not resemble a straight line. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
When values of two variables appear to be related, but the relationship does not follow a
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
linear pattern, this is called a ___ relationship - correct answersnonlinear or curvilinear
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relationship (for example exponential relationship) |||\\\ |||\\\ |||\\\ |||\\\
The ___, Pearson's r, measures the degree of linear relationship or consistency of the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relationship - correct answerscorrelation coefficient |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
