Correlation, Causal, Regression

• strong positive

• strong negative

• weak positive

• weak negative

• strong positive

• strong negative

• weak positive

• weak negative

Estimate the correlation coefficient for this scatterplot.

• A) r = -0.9

• B) r = 1

• C) r = 0.9

• D) r = -1

As x increases, y decreases.

• A) no correlation

• B) negative correlation

• C) correlation coefficient

• D) positive correlation

As x increases, y increases

• A) correlation coefficient

• B) causation

• C) positive correlation

• D) negative correlation

Which phrase best describes the relationship between the number of miles driven and the amount of gasoline used?

• causal, but not correlated

• correlated, but not causal

• both correlated and causal

• neither correlated nor causal

Which situation describes a correlation that is not a causal relationship?

• The rooster crows, and the Sun rises.

• The more miles driven, the more gasoline needed

• The more heat, the faster the food cooks.

• The faster the pace of a runner, the quicker the runner finishes.

What type of relationship exists between the number of hours spent on your phone and the battery left in the phone?

• positive correlation, causal

• positive correlation, not causal

• negative correlation, causal

• negative correlation, not causal

There is a negative correlation between the number of hours a student watches television and his or her social studies test score. Which scatter plot below displays this correlation?

• 1

• 2

• 3

• 4

A line of best fit has been drawn on the scatter plot below. The relationship between these variables can be described as having

• negative correlation

• no correlation

• positive correlation

• zero correlation