Cpm 3 Statistics

What type of association does this scatter plot show?

• positive linear association

• negative linear association

• no association

• nonlinear association

What type of relationship does this graph have?

• Positive correlation

• Negative correlation

• No correlation

• Constant

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -2

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

Find the median for the set of numbers:

85, 42, 64, 71, 39, 56, 26

• 71

• 42

• 56

• 60

Find the Interquartile Range

• 5

• 6

• 7

• 8

What percentage of the data is between 90 and 140?

• 25 %

• 50%

• 75%

• 100%

Which class period has a greater range of test scores?

• 1st Period

• 2nd Period

• They're the same.

• You can't tell.

Which box plots has a median value equal to 40?

• (1)

• (2)

• (3)

• (4)

If a ball needs to be hit exactly 300 ft, which batter is more reliable to hit that distance?

• Batter A

• Batter B

• Both

• Neither