Correlation Statistics

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

What type of correlation?

• Positive Correlation

• Negative Correlation

• No Correlation

What type of Correlation?

• Positive Correlation

• Negative Correlation

• No Correlation

A perfect positive correlation has a correlation coefficient of ____. 

• 1

• -1

• 0

The table shows the attendance at a flag football game for the first 8 games of the season. What is the value of the correlation coefficient for the data? Round your answer to the nearest hundredth.

Mathematical Equivalence

ON

Data is analyzed comparing hours studied and grades. It is determined that the correlation coefficient is 0.92. This means there is a

(a)   between studying and grades.

• strong positive correlation

• strong negative correlation

• weak positive correlation

• weak negative correlation

What's true about r and r²?

​ (a)   have an r² value

​ (b)   have an r value

• All function types

• Only linear functions

Tags

R vs R^2

• strong positive

• strong negative

• weak positive

• weak negative

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation