Unit 3 Test Review

Front

What is a weak positive correlation?

Back

A weak positive correlation indicates that as one variable increases, the other variable tends to also increase, but the relationship is not strong.

Front

What is a negative correlation?

Back

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

Front

What is a positive correlation?

Back

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

Front

What is the y-intercept in the equation y = -x + 1?

Back

The y-intercept is 1, which is the value of y when x is 0.

Front

What does a correlation coefficient of r = -0.97 indicate?

Back

A correlation coefficient of r = -0.97 indicates a strong negative correlation between two variables.

Front

What is the definition of correlation in statistics?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

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 0 mean?

Back

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

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between hours studied and test scores.

Front

What is an example of a negative correlation?

Back

An example of a negative correlation is the relationship between the amount of exercise and body weight.