What is correlation?
Unit 3 Reveiw

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Mathematics
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Correlation is a statistical measure that describes the extent to which two variables change together. A strong correlation indicates that as one variable increases, the other tends to increase (positive correlation) or decrease (negative correlation).
2.
FLASHCARD QUESTION
Front
What does a strong negative correlation indicate?
Back
A strong negative correlation indicates that as one variable increases, the other variable tends to decrease significantly.
3.
FLASHCARD QUESTION
Front
What is the correlation coefficient?
Back
The correlation coefficient is a numerical value that measures the strength and direction of a linear relationship between two variables, ranging from -1 (strong negative) to +1 (strong positive).
4.
FLASHCARD QUESTION
Front
What is a side-by-side bar graph used for?
Back
A side-by-side bar graph is used for comparing the distributions of two categorical variables.
5.
FLASHCARD QUESTION
Front
What should we be cautious about when interpreting scatterplots?
Back
We should be cautious not to confuse 'correlation' with 'causation' when interpreting scatterplots.
6.
FLASHCARD QUESTION
Front
What is an explanatory variable (EV)?
Back
An explanatory variable (EV) is the variable that is manipulated or changed in an experiment to observe its effect on the response variable.
7.
FLASHCARD QUESTION
Front
What does a weak positive correlation indicate?
Back
A weak positive correlation indicates that there is a slight tendency for one variable to increase as the other variable increases, but the relationship is not strong.
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