
Ch 9 Regression Wisdom
Flashcard
•
Mathematics
•
12th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What does random scatter in the residuals indicate about a regression model?
Back
It indicates a model with high predictive power.
2.
FLASHCARD QUESTION
Front
What is the correlation coefficient range for two strongly associated variables?
Back
The correlation will be near +1.0 or -1.0.
3.
FLASHCARD QUESTION
Front
Does a high correlation between two variables imply causation?
Back
No, correlation does not imply causation.
4.
FLASHCARD QUESTION
Front
What does the regression equation Price^ = -19.4 + 0.1297(Area) represent?
Back
It represents the relationship between square footage (Area) and price of a house.
5.
FLASHCARD QUESTION
Front
What is the purpose of a line of best fit in regression analysis?
Back
To make predictions based on the data.
6.
FLASHCARD QUESTION
Front
What is a lurking variable?
Back
A variable that is not the explanatory or response variable but may influence the response variable.
7.
FLASHCARD QUESTION
Front
What is the difference between correlation and causation?
Back
Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.
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