Topic 4 Test Review

What type of correlation does this scatter plot show?

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

What type of correlation does this graph show?

• Positive
• negative
• none
• all of the above

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the line of best fit to predict how many chapters would be in a book with 140 pages.

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

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

Find the slope for the line of best fit using points (2,2) and (4,3)

• 2

• 1/2

• -2

• -1/2

What is the equation of the line of best fit?

(2, 120) (6, 20)

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

What type of association does this scatter plot represent?

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

Find the slope of a line that passes through the given points:

(5,1) and (8,3)

• $\frac{2}{3}$

• $\frac{-2}{3}$

• $\frac{3}{-2}$

• $\frac{3}{2}$

Find the slope

(0,2) (3,-3)

• -5/3

• -3/5

• 5/3

• 3/5