Closure - Unit 6.2

Front

What is a correlation in statistics?

Back

A correlation is a statistical measure that describes the extent to which two variables change together. It can be positive, negative, or none.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What is the range of correlation coefficients?

Back

The range of correlation coefficients is from -1 to +1.

Front

What does a correlation coefficient of +1 signify?

Back

A correlation coefficient of +1 signifies a perfect positive correlation.

Front

What does a correlation coefficient of -1 signify?

Back

A correlation coefficient of -1 signifies a perfect negative correlation.

Front

What does a correlation coefficient of 0 signify?

Back

A correlation coefficient of 0 signifies no correlation between the variables.

Front

What is the purpose of a scatter plot?

Back

A scatter plot is used to visually represent the relationship between two quantitative variables.

Front

What does a strong negative association look like on a graph?

Back

A strong negative association on a graph appears as a downward slope, indicating that as one variable increases, the other decreases significantly.

Front

What does a strong positive association look like on a graph?

Back

A strong positive association on a graph appears as an upward slope, indicating that as one variable increases, the other also increases significantly.