
Correlation
Authored by Zaira Seng
Mathematics
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Which of the following statements is TRUE about the Pearson correlation coefficient (r)?
It measures the strength and direction of a linear relationship between two ordinal variables.
It is used when at least one variable is binary.
It measures the strength and direction of a linear relationship between two continuous variables.
It is a non-parametric measure of correlation.
2.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
The Spearman correlation coefficient is most appropriate when ________________
The data are continuous and normally distributed.
At least one variable is ordinal or the relationship is non-linear.
Both variables are binary
You are measuring the agreement between two sets of ranked data.
3.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
If the Pearson correlation coefficient (r) between two variables is -0.85, what does this indicate about the relationship between the variables?
A strong positive linear relationship
A strong negative linear relationship
A weak positive linear relationship
No relationship
4.
MULTIPLE CHOICE QUESTION
20 sec • 3 pts
Which correlation coefficient would you use to measure the relationship between gender (male/female) and salary?
Pearson
Spearman
Kendall’s Tau
Point-Biserial
5.
MULTIPLE CHOICE QUESTION
20 sec • 3 pts
Kendall's tau (τ) is most appropriate for which type of data?
Two sets of ranked data to measure agreement
Continuous data with outliers
Binary and continuous data
Categorical data
6.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
What is the range of the Pearson correlation coefficient (r)?
-1 to 1
0 to 1
-∞ to ∞
0 to ∞
7.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Which of the following is a limitation of the Pearson correlation coefficient?
It cannot measure non-linear relationships.
It is only applicable to categorical data.
It requires a large sample size.
It can only be used with two variables.
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