What is the correlation coefficient (r)?
Correlation Coefficient Practice

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•
Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The correlation coefficient (r) is a statistical measure that describes the strength and direction of a relationship between two variables, ranging from -1 to 1.
2.
FLASHCARD QUESTION
Front
What does an r value of -1 indicate?
Back
An r value of -1 indicates a perfect negative correlation, meaning that as one variable increases, the other variable decreases in a perfectly linear manner.
3.
FLASHCARD QUESTION
Front
What does an r value of 1 indicate?
Back
An r value of 1 indicates a perfect positive correlation, meaning that as one variable increases, the other variable also increases in a perfectly linear manner.
4.
FLASHCARD QUESTION
Front
What does an r value of 0 indicate?
Back
An r value of 0 indicates no correlation between the two variables, meaning there is no linear relationship.
5.
FLASHCARD QUESTION
Front
What is a strong positive correlation?
Back
A strong positive correlation is indicated by an r value close to 1, suggesting that as one variable increases, the other variable tends to also increase.
6.
FLASHCARD QUESTION
Front
What is a strong negative correlation?
Back
A strong negative correlation is indicated by an r value close to -1, suggesting that as one variable increases, the other variable tends to decrease.
7.
FLASHCARD QUESTION
Front
What is a scatter plot?
Back
A scatter plot is a graphical representation of two variables, where each point represents an observation, allowing for visual assessment of the relationship between the variables.
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