Line of Best Fit

Front

What does a correlation coefficient of r = 0.92 indicate?

Back

Strong positive correlation.

Front

What does a correlation show about two variables?

Back

They are related.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship, while causation implies one variable directly affects the other.

Front

How do you find the line of best fit using a calculator?

Back

Input the data points into the calculator and use the regression function to find the equation.

Front

What is the equation of the line of best fit for the points (0,0), (1,2), (3,5), (6,7)?

Back

y = 1.14x + 0.64.

Front

What is an example of causation?

Back

The speed you drive affects the amount of fuel you use.

Front

What does a strong negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is a weak positive correlation?

Back

A slight increase in one variable is associated with a slight increase in another variable.

Front

What is the purpose of a line of best fit?

Back

To summarize the relationship between two variables in a dataset.

Front

What does it mean if two variables are unrelated?

Back

There is no correlation between the two variables.