Unit 6 Practice Test - Extra Practice
Flashcard
•
Mathematics
•
9th Grade
•
Hard
+8
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a positive correlation in a graph?
Back
A positive correlation indicates that as one variable increases, the other variable also increases.
Tags
CCSS.HSS.ID.B.5
2.
FLASHCARD QUESTION
Front
What does a correlation coefficient of r=0.9 indicate?
Back
It indicates a strong positive correlation between the two variables.
Tags
CCSS.HSS.ID.B.5
3.
FLASHCARD QUESTION
Front
What is the equation of a line of best fit?
Back
The line of best fit is a straight line that best represents the data on a scatter plot.
Tags
CCSS.8.EE.B.5
4.
FLASHCARD QUESTION
Front
How can you determine the number of square feet in a house using a graph?
Back
You can use the line of best fit to estimate the value based on the number of rooms.
Tags
CCSS.HSF-LE.A.1B
5.
FLASHCARD QUESTION
Front
What does the slope of a line in a graph represent?
Back
The slope represents the rate of change between the two variables.
Tags
CCSS.8.EE.B.5
6.
FLASHCARD QUESTION
Front
What is the purpose of a scatter plot?
Back
A scatter plot is used to determine the relationship between two quantitative variables.
Tags
CCSS.8.SP.A.1
7.
FLASHCARD QUESTION
Front
What does it mean if there is no correlation between two variables?
Back
It means that changes in one variable do not affect the other variable.
Tags
CCSS.HSS.ID.B.5
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