Linear Regression Practice

Flashcard
•
Mathematics
•
9th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is linear regression?
Back
Linear regression is 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.
2.
FLASHCARD QUESTION
Front
What does a positive correlation indicate in a scatter plot?
Back
A positive correlation indicates that as one variable increases, the other variable also tends to increase.
3.
FLASHCARD QUESTION
Front
What does a negative correlation indicate in a scatter plot?
Back
A negative correlation indicates that as one variable increases, the other variable tends to decrease.
4.
FLASHCARD QUESTION
Front
What does 'no correlation' mean in the context of a scatter plot?
Back
'No correlation' means there is no discernible relationship between the two variables; changes in one do not predict changes in the other.
5.
FLASHCARD QUESTION
Front
What is the formula for a linear regression line?
Back
6.
FLASHCARD QUESTION
Front
How do you interpret the slope (m) in a linear regression equation?
Back
The slope (m) represents the change in the dependent variable (y) for a one-unit increase in the independent variable (x).
7.
FLASHCARD QUESTION
Front
What is the y-intercept (b) in a linear regression equation?
Back
The y-intercept (b) is the value of the dependent variable (y) when the independent variable (x) is zero.
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