Compare Population Using Measure of Center and Variability

Which class was more consistent in their Algebra Scores?

• Class #2

• Class #1

• Both classes had the same consistency.

• 50%

The double line plot shows the number of students who attended the home games of the baseball team for two recent seasons.  Which of the following statements is NOT true.

• The median attendance for 2009 was less than the median attendance than 2010.

• The attendance for 2010 was more consistent, so the MAD would be smaller than the MAD for 2009.

• The attendance for 2009 was more consistent, so the MAD would be smaller than the MAD for 2010.

• The attendance for 2010 ranged from 20-27.

The mode score on the 6th grade math test was 94! Which of these interpretations MUST be correct?

• 94 was the highest score on the test.

• More students received a 94 than any other score

• No student scored below a 94

• A score of 91 was slightly below average.

A data set consists of the numbers 2, 2, 5, 6 and 15.  Which statement is true for this data?

• median > mean

• mean = mode

• mode < median

• median = mode

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which measure of variability should you use?

• IQR

• standard deviation

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which measure of variability should you use?

• IQR

• standard deviation