4.2 practice

Front

What is a negative correlation?

Back

A negative correlation is a relationship between two variables in which one variable increases as the other decreases.

Front

What is a positive correlation?

Back

A positive correlation is a relationship between two variables in which both variables increase or decrease together.

Front

What does no correlation mean?

Back

No correlation means there is no relationship between the changes in two variables.

Front

What is a correlation coefficient?

Back

A correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of -0.19 indicate?

Back

A correlation coefficient of -0.19 indicates a weak negative correlation.

Front

What does a correlation coefficient of 0.04 indicate?

Back

A correlation coefficient of 0.04 indicates a weak positive correlation.

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: closer to 1 or -1 indicates a stronger correlation.

Front

What is the relationship between miles driven and gas remaining in the tank?

Back

As the number of miles driven increases, the amount of gas remaining in the tank decreases.

Front

What is the trend observed in the relationship between temperature and ice cream sales?

Back

As the temperature increases, the amount of ice cream sales increases, indicating a positive correlation.

Front

What is the trend observed in the relationship between daily temperature and beach visitors?

Back

As the daily temperature increases, the number of beach visitors increases.