
L9 Correlation
Quiz
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Others
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Professional Development
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Practice Problem
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Easy
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is correlation analysis used for?
To calculate effect size for group differences.
To identify outliers in the data.
To determine the variability within a single variable.
To investigate the relationships that exist between variables.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Correlation analysis is an example of what types of analysis?
Univariate
Bivariate (data on two variables is collected from the same participants at the same point in time)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a correlation coefficient (r) express?
The strength of shared variance between groups.
The probability of rejecting the null hypothesis.
The direction of causation between two variables.
The nature and strength of the relationship between two variables.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the three critical pieces of information provided by a correlation coefficient (r)?
Direction, variability, and independence.
Variability, strength, and sample size.
Causation, prediction, and confidence intervals.
Direction, strength, amount of shared variance.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the coefficient of determination?
The standard deviation of the predictor variable.
The p-value for a correlation test.
The range of the correlation coefficient.
The proportion of variance shared between two variables.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In what type of study is a correlation analysis typically used?
Cross-sectional methodological design
Experimental Design
Longitudinal Causal Study
Case Study
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Are any variables manipulated in a correlation analysis?
yes
No
Maybe
I don’t know
Are any variables manipulated in a correlation analysis?
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