Stats Review

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive

What type of association does this graph have?

• positive
• negative
• none
• all of the above

r=0.3

• Strong positive 
• Weak positive
• Strong negative
• Weak negative 

r=-0.89

• Strong positive 
• Weak positive 
• Strong negative 
• Weak negative 

What type of association does this scatter plot represent?

• positive linear association
• negative linear association
• no association
• nonlinear association

Tags

CCSS.HSF-LE.A.1B

Which sentence describes the relationship shown on this scatterplot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases
• As x increases, y increases
• As x decreases, y decreases

In the least squares regression line:

y = −1.2+0.52x

• the y-intercept =−0.52 and slope =−1.2

• the y-intercept =0.52 and slope =−1.2

• the y-intercept =−1.2 and slope =0.52

• the y-intercept =1.2 and slope =−0.52

The least squares regression line y=8−9x predicts that, when x=5, the value of y is:

• -45

• -37

• 37

• 53

A least squares regression line of the form y=a+bx is fitted to the data set shown.

The equation of the line is:

• y=24.4+0.69x

• y=−0.69+24.4x

• y=24.4−0.69x

• y=28.7−x