11/15/24 FLASHCARD: Line of best Fit/Correlation

Front

What is the definition of correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables are related.

Front

What does a correlation coefficient (r) of -0.3 indicate?

Back

A correlation coefficient of -0.3 indicates a weak negative correlation between the two variables.

Front

What does a correlation coefficient (r) of -0.89 indicate?

Back

A correlation coefficient of -0.89 indicates a strong negative correlation between the two variables.

Front

What does a correlation coefficient (r) of 0 indicate?

Back

A correlation coefficient of 0 indicates no correlation between the two variables.

Front

What does a positive correlation mean?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation mean?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What is the purpose of a line of best fit?

Back

The line of best fit is used to summarize the relationship between two variables in a scatter plot.

Front

How can you determine the strength of a correlation?

Back

The strength of a correlation can be determined by the absolute value of the correlation coefficient (r); values closer to 1 or -1 indicate stronger correlations.

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 does it mean if there is no correlation in a graph?

Back

If there is no correlation, it means that changes in one variable do not predict changes in the other variable.