Moderate Correlation Coefficient

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

r=-0.89

• Strong positive 

• Weak positive 

• Strong negative 

• Weak negative 

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

What is most likely the correlation coefficient for this data set?

• r = -0.20

• r = -0.75

• r = 0.85

• r = 1.00

Estimate the correlation coefficient

• r= -0.9

• r= 0.9

• r=-0.5

• r=0.5

Determine the correlation coefficient of the given data.

• - .5477

• .1770

• .8956

• - .9463

To convince his students to slow down, Coach Logan tracks the typing speed and the number of errors made from a few of his students. Calculate the correlation coefficient, r, of the data set. Round to THREE decimal places.

Mathematical Equivalence

ON

Which r-value suggests a weak negative correlation?

• r = 0.1847

• r = −0.1847

• r = 0.9816

• r = −0.9816

Which with is the line of best fit?

• Black

• Orange

• Red

• Blue