Scatterplots

Which best describes the form of this scatterplot?

• linear

• nonlinear

• scattered

What best describes this association?

• positive non linear weak

• positive linear strong

• negative moderate non linear

• no association

how would you describe this association?

• positive linear strong

• positive linear weak

• positive linear moderate

• no association

describe the association

• Positive linear weak

• positive linear strong

• Positive non linear strong

• positive linear moderate

What type of relationship does this graph have?

• Positive 

• Negative

• No Relationship

• Constant

Based on this scatterplot, approximate what score should a student who attended class 22 days expect to receive on the exam?

• 84

• 71

• 95

• 75

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Describe the correlation coefficient if

r = 0.90

• Positive, weak

• Positive, strong

• Negative, weak

• Negative, strong

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak

• -0.26 weak

• -0.26 moderate

• 0.07 strong

Find the equation of the line of best fit for this table.

• y = -2.28x + 51.08

• y = 51.08x - 2.28

• y = 0.06x - 0.26

• y = -2.28x - 0.26