Positive or Negative Correlations

True or False: If the correlation coefficient (r) is negative, then the coefficient of determination (r^2) will be positive.

• True

• False

True or False: If the slope of the least square line is positive then the value or r will also be positive.

• True

• False

Correlation coefficient is the statistic that measures the strength and direction of a linear association between two quantitative variables.

• True

• False

If r is negative, then there is...

• Negative association

• No correlation

• Positive association

r = -0.3 is considered to have...

• moderate negative correlation

• weak negative correlation

• no correlation

• strong negative correlation

Which of the following best describes this correlation?

• Positive, Strong

• Negative Strong

• Positive Weak

• Negative Weak

Which of the following variables is used to represent the correlation?

• C

• n

• S_x

• r

What is the direction of the scatter plot?

• Positive Association

• Negative Association

• None

• Linear