What is correlation in statistics?
10.1 Correlation Practice

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Correlation is a statistical measure that describes the extent to which two variables change together. It indicates the strength and direction of a linear relationship between the variables.
2.
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.
3.
FLASHCARD QUESTION
Front
What does a negative correlation 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 mean?
Back
No correlation means that there is no discernible relationship between the changes in two variables.
5.
FLASHCARD QUESTION
Front
How can you visually identify correlation in a scatterplot?
Back
In a scatterplot, correlation can be identified by the pattern of the points. A rising pattern indicates positive correlation, a falling pattern indicates negative correlation, and a random pattern indicates no correlation.
6.
FLASHCARD QUESTION
Front
What is the range of correlation coefficients?
Back
The range of correlation coefficients is from -1 to +1. A coefficient of +1 indicates perfect positive correlation, -1 indicates perfect negative correlation, and 0 indicates no correlation.
7.
FLASHCARD QUESTION
Front
What is the purpose of using correlation in data analysis?
Back
The purpose of using correlation in data analysis is to identify and quantify the strength and direction of relationships between variables, which can inform predictions and decision-making.
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