Unit 4 Review (Line of Best Fit and Correlation Coefficient)

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•
Mathematics
•
11th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Line of Best Fit?
Back
The Line of Best Fit is a straight line that best represents the data on a scatter plot. It minimizes the distance between the line and all the points in the dataset.
2.
FLASHCARD QUESTION
Front
What does the correlation coefficient indicate?
Back
The correlation coefficient measures the strength and direction of a linear relationship between two variables, ranging from -1 (perfect negative correlation) to +1 (perfect positive correlation).
3.
FLASHCARD QUESTION
Front
How do you interpret a strong positive correlation?
Back
A strong positive correlation indicates that as one variable increases, the other variable also tends to increase.
4.
FLASHCARD QUESTION
Front
How do you interpret a strong negative correlation?
Back
A strong negative correlation indicates that as one variable increases, the other variable tends to decrease.
5.
FLASHCARD QUESTION
Front
What does a correlation coefficient of 0 indicate?
Back
A correlation coefficient of 0 indicates no correlation between the two variables, meaning changes in one variable do not predict changes in the other.
6.
FLASHCARD QUESTION
Front
What is the formula for the regression equation?
Back
The regression equation is typically expressed as yhat = mx + b, where m is the slope and b is the y-intercept.
7.
FLASHCARD QUESTION
Front
What does the slope of a regression line represent?
Back
The slope of a regression line represents the rate of change of the dependent variable (y) for each unit change in the independent variable (x).
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