What is the range of the correlation coefficient 'r'?
Linear Regression & Correlation Coefficient

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Mathematics
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
-1 ≤ r ≤ 1
2.
FLASHCARD QUESTION
Front
What does a correlation coefficient of r = -1 indicate?
Back
Perfect negative correlation between two variables.
3.
FLASHCARD QUESTION
Front
What does a correlation coefficient of r = 1 indicate?
Back
Perfect positive correlation between two variables.
4.
FLASHCARD QUESTION
Front
What does a correlation coefficient of r = 0 indicate?
Back
No correlation between two variables.
5.
FLASHCARD QUESTION
Front
What is the purpose of linear regression?
Back
To model the relationship between a dependent variable and one or more independent variables.
6.
FLASHCARD QUESTION
Front
What is the equation of a linear regression line?
Back
y = mx + b, where m is the slope and b is the y-intercept.
7.
FLASHCARD QUESTION
Front
How do you interpret the slope (m) in a linear regression equation?
Back
The slope indicates the change in the dependent variable for a one-unit change in the independent variable.
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