Correlation Flashcard

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together. It indicates the strength and direction of a relationship between the variables.

Front

What are co-variables?

Back

Co-variables are the two variables that are being compared in a correlation study. They can be independent or dependent variables.

Front

What does a strong positive correlation indicate?

Back

A strong positive correlation indicates that as one variable increases, the other variable also increases, and they move closely together.

Front

What does a strong negative correlation indicate?

Back

A strong negative correlation indicates that as one variable increases, the other variable decreases, showing an inverse relationship.

Front

What does a weak correlation mean?

Back

A weak correlation means that there is a slight relationship between the two variables, but it is not strong enough to be significant.

Front

What is the range of correlation coefficients?

Back

The range of correlation coefficients is from -1 to +1, where -1 indicates a perfect negative correlation, +1 indicates a perfect positive correlation, and 0 indicates no correlation.

Front

What does r = 0.3 signify?

Back

r = 0.3 signifies a weak positive correlation between the two variables.

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.

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of the relationship between two variables, where each point represents an observation.

Front

What does it mean if a graph shows no correlation?

Back

If a graph shows no correlation, it means that there is no discernible relationship between the two variables.