
AP Statistics Linear Regression
Flashcard
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
+2
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is linear regression?
Back
A statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.
Tags
CCSS.8.SP.A.2
2.
FLASHCARD QUESTION
Front
What does the slope of a regression line represent?
Back
The change in the dependent variable for a one-unit increase in the independent variable.
Tags
CCSS.HSF.LE.B.5
3.
FLASHCARD QUESTION
Front
What is the purpose of a residual plot?
Back
To assess the fit of a regression model by plotting the residuals (differences between observed and predicted values) against the independent variable.
Tags
CCSS.HSS.ID.B.6B
4.
FLASHCARD QUESTION
Front
What does a correlation coefficient (r) indicate?
Back
The strength and direction of a linear relationship between two variables, ranging from -1 to 1.
Tags
CCSS.HSS.ID.C.8
5.
FLASHCARD QUESTION
Front
What does r² represent in regression analysis?
Back
The proportion of the variance in the dependent variable that is predictable from the independent variable(s).
Tags
CCSS.HSS.ID.B.6B
6.
FLASHCARD QUESTION
Front
What is the significance of a residual value?
Back
It indicates how far off a predicted value is from the actual observed value.
Tags
CCSS.HSS.ID.B.6B
7.
FLASHCARD QUESTION
Front
What does it mean if the residual plot shows a random scatter?
Back
It suggests that a linear model is appropriate for the data.
Tags
CCSS.HSS.ID.B.6B
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