Comparing Measures of Center and Variation

The Table above shows the points scored by the JV basketball team in their first seven games. Calculate the mean, median, mode and range. Which statistical measure makes the team sound the best?

• Mean
• Median
• Mode
• Range

Which class has the higher test score median? 

• Class #1
• Class # 2 
• The medians are equal
• The median is not shown here. 

Which class was more consistent in their Algebra Scores?

• Class #2
• Class #1
• Both classes had the same consistency.
• 50%

Paulo got these grades in three tests: 72, 80 and 82. He had one more test to take. He wanted an average of 80 for the four tests. What mark must he get in the fourth test?

• 80
• 234
• It is not possible for him to get an 80 average
• 86

Mrs. Rosenblatt's class has an average grade of 87. Later on she realizes she left out Joe's score. His grade was a 65. The new mean will ,....

• increase
• decrease
• stay the same

Ms. Rork's class had a range of test grades from 78 to 97. She forgot to add in a student who got an 80% on the test. How will this affect the range?

• Increase
• Decrease
• Stay the Same

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.

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.

For which group of data does the mean equal the mode?

• 4, 5, 5, 8
• 4, 4, 6, 6
• 4, 5, 6, 6
• 4, 5, 5, 6

You are given a list of numbers with a median of 10.  Each of the numbers is doubled.  What will happen to the median of the second set of numbers?

• It will increase by one-half
• It will double
• It will stay the same
• Not enough information is given