Correlation Coefficient and Line of Best Fit
Flashcard
•
Mathematics
•
8th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the correlation coefficient?
Back
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 a correlation coefficient of .9984 indicate?
Back
It indicates a very strong positive linear relationship between the two variables.
3.
FLASHCARD QUESTION
Front
What is the line of best fit?
Back
A straight line that best represents the data on a scatter plot, used to predict values.
4.
FLASHCARD QUESTION
Front
What does the y-intercept of a line of best fit represent?
Back
The predicted value of the dependent variable when the independent variable is zero.
5.
FLASHCARD QUESTION
Front
What does the slope of the line of best fit indicate?
Back
The rate of change of the dependent variable for each unit change in the independent variable.
6.
FLASHCARD QUESTION
Front
How do you find the line of best fit using a graph?
Back
By plotting the data points and drawing a straight line that minimizes the distance to all points.
7.
FLASHCARD QUESTION
Front
What is the formula for the slope of a line?
Back
Slope (m) = (y2 - y1) / (x2 - x1) for two points (x1, y1) and (x2, y2).
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