What is a scatterplot?
Scatterplots, Linear Regression, and Residuals

Flashcard
•
Mathematics
•
12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.
2.
FLASHCARD QUESTION
Front
What does a positive correlation in a scatterplot indicate?
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 in a scatterplot indicate?
Back
A negative correlation indicates that as one variable increases, the other variable tends to decrease.
4.
FLASHCARD QUESTION
Front
What does no correlation in a scatterplot indicate?
Back
No correlation indicates that there is no discernible relationship between the two variables.
5.
FLASHCARD QUESTION
Front
How do you calculate a residual?
Back
Residual = Actual value - Predicted value.
6.
FLASHCARD QUESTION
Front
What does a residual plot show?
Back
A residual plot shows the residuals on the vertical axis and the independent variable on the horizontal axis, helping to assess the fit of a regression model.
7.
FLASHCARD QUESTION
Front
What does it mean if a residual plot has no pattern?
Back
If a residual plot has no pattern, it suggests that the linear regression model is a good fit for the data.
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