
Unit 2 Review
Flashcard
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scatter plot?
Back
A scatter plot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.
2.
FLASHCARD QUESTION
Front
What does it mean if a scatter plot is non-linear?
Back
A non-linear scatter plot indicates that the relationship between the variables does not follow a straight line, suggesting a more complex relationship.
3.
FLASHCARD QUESTION
Front
What is an explanatory variable?
Back
An explanatory variable, also known as an independent variable, is the variable that is manipulated or changed to observe its effect on another variable.
4.
FLASHCARD QUESTION
Front
What is a response variable?
Back
A response variable, also known as a dependent variable, is the variable that is measured or observed in an experiment to see how it is affected by changes in the explanatory variable.
5.
FLASHCARD QUESTION
Front
How do you calculate the residual in a regression model?
Back
The residual is calculated as the difference between the observed value and the predicted value from the regression model.
6.
FLASHCARD QUESTION
Front
What does a positive correlation indicate?
Back
A positive correlation indicates that as one variable increases, the other variable also tends to increase.
7.
FLASHCARD QUESTION
Front
What is the meaning of the y-intercept in a regression equation?
Back
The y-intercept represents the expected value of the response variable when the explanatory variable is zero.
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