Algebra I IM Unit 3: Two-Variable Statistics Review

Front

What is a line of best fit used for?

Back

To make predictions.

Front

How many students prefer using pencil more than pen?

Back

60, sixty.

Front

Which one of these examples is NOT an example of CAUSATION? Kryptonite causes Superman to lose all his powers. Temperatures of less than 32˚F cause water to freeze. Umbrellas cause rainstorms. Stepping on the gas pedal causes a car to move faster.

Back

Umbrellas cause rainstorms.

Front

What does the correlation coefficient measure in a scatter plot?

Back

The correlation coefficient measures the strength and direction of the linear relationship between two variables.

Front

What is a correlation coefficient?

Back

Number between -1 and 1 that describes the strength of a relationship.

Front

What is a scatter plot?

Back

A graph that shows the relationship between two variables using dots to represent data points.

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the range of the correlation coefficient?

Back

The range is from -1 to 1.

Front

What does a correlation coefficient of 0 mean?

Back

There is no linear relationship between the two variables.