Coefficient Correlation

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

Which with is the line of best fit?

• Black

• Orange

• Red

• Blue

As x increases, y increases

• A) correlation coefficient

• B) causation

• C) positive correlation

• D) negative correlation

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• A) The more books students read, the lower their English grade.

• B) The more books students read, the higher their English grade.

• C) The fewer books students read, the higher their English grade.

• D) No relationship exists between the number of books students read and their English grades.

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

What is the line of best fit?

• f(x)= 5x+1.82

• cannot be determined

• f(x)= 1.82x + 5.02

• f(x)= 1.1x + 4.2

Estimate the correlation coefficient.

• r=-1

• r=1

• r=-0.5

• r=0.5

Describe the relationship between the variables.

• no correlation

• strong positive correlation

• strong negative correlation

• weak positive correlation

Describe the relationship between the variables.

• Strong positive correlation

• Weak positive correlation

• Strong negative correlation

• Weak negative correlation