Correlation and Causal Relationships

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = -1.4

• r = 1

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = 2

• r = 1

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = 0.85

• r = 1.1

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = 0.85

• r = 1.1

Which of the following best describes the correlation shown on the graph?

• negative correlation

• positive correlation

• no correlation

Which sentence describes the relationship shown on this scatterplot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

Which example shows CORRELATION?

• I put water in the freezer and now I have ice.

• The alarm clock went off and I woke up.

• Temperature and the amount of people at the beach.

To graphically represent a correlation between two variables construct a ___.

• box & whisker diagram

• histogram

• normal curve

• scatterplot

The correlation coefficient "r" is a value between

• 0 and 1

• 0 and 100

• -1 and 1

• -2 and 2

If there is NO correlation, the correlation coefficient is ____. 

• 0

• -1

• 1