Two Variable Statistics
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What does the y-intercept represent in a linear regression model?
Back
The y-intercept represents the value of the dependent variable when the independent variable is zero.
Tags
CCSS.HSF.LE.B.5
2.
FLASHCARD QUESTION
Front
What does a positive direction in a scatter plot indicate?
Back
A positive direction indicates that as the independent variable increases, the dependent variable also tends to increase.
Tags
CCSS.HSF-LE.A.1B
3.
FLASHCARD QUESTION
Front
What is the correlation coefficient?
Back
The correlation coefficient is a statistical measure that describes the strength and direction of a relationship between two variables, ranging from -1 to 1.
Tags
CCSS.HSS.ID.C.8
4.
FLASHCARD QUESTION
Front
What does a correlation coefficient of 0.94 indicate?
Back
A correlation coefficient of 0.94 indicates a very strong positive linear relationship between the two variables.
Tags
CCSS.HSS.ID.B.5
5.
FLASHCARD QUESTION
Front
What is a residual in statistics?
Back
A residual is the difference between the observed value and the predicted value in a regression analysis.
Tags
CCSS.HSS.ID.B.6B
6.
FLASHCARD QUESTION
Front
How do you calculate the residual for a given data point?
Back
Residual = Observed value - Predicted value.
7.
FLASHCARD QUESTION
Front
What does a negative residual indicate?
Back
A negative residual indicates that the observed value is less than the predicted value.
Tags
CCSS.HSS.ID.B.6B
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