Strength of Correlations

When the data closely resembles a line

• Strong Correlation

• Weak Correlation

• No Correlation

• Correlation

What type of correlation does this graph have?

• Negative

• No Correlation

• positive

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Which sentence describes the relationship shown on this scatter plot?

• 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

Coefficient of correlation of -0.90 and +0.90 have equal strength

• True

• False

Choose two words from those listed below to best describe the correlation between the two variables.

• strong

• weak

• positive

• negative

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak

• -0.26 weak

• -0.26 moderate

• 0.07 strong

Is r = -0.87 strong, moderate, or weak?

• strong

• moderate

• weak

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• -0.19 weak

• -0.19 moderate

• 0.04 weak

• 0.04 strong

r=-0.89

• Strong positive 

• Weak positive 

• Strong negative 

• Weak negative