Correlations

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

What does it mean when we say two factors are correlated?

• One factor causes the other.

• One factor is a result of the other.

• The measure of how much two factors change together & how well one factor predicts the other.

• The measure of how much two factors diverge together & how well one factor will cause the other.

What kind of correlation?

• Positive

• Negative

• No

What kind of correlation?

• Positive

• Negative

• No

What is the correlation coefficient of the regression line?

• 0.986

• 2527

• total length (cm) = 1.1forklength (cm) + 4.1

• 4.1

Determine the correlation coefficient of the given data.

• - .5477

• .1770

• .8956

• - .9463

As shown in the table, a person's target heart rate during exercise changes as the person gets older. Find the correlation coefficient (r).

• -0.999

• -0.664

• 0.998

• 1.503

Describe the relationship between the variables.

• Weak positive correlation

• Weak negative correlation

• Strong positive correlation

• Strong negative correlation

What type of correlation (association)?

The outside temperature and the amount of layers you wear.

• Positive correlation

• Negative correlation

• No correlation

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation