Measures of Center and Dot Plots

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier? 

• Girls

• Boys

• Both Plots

• Neither

What is the difference between the medians for the two data sets? 

• 0 tickets

• 2 tickets

• 4 tickets

• 6 tickets

Find the medians.
Science: _________ Math: __________ 

•  science: 4.5 h; math: 3 h

•  science: 3 h; math: 4.5 h

•  science: 5 h; math: 5 h

•  science: 3.5 h; math: 4 h

Compare the centers and spreads. 

•  Math has a higher median (center) and a wider spread.

•  Math has a higher median (center) and a smaller spread.

• Math has a lower median (center) and a smaller spread.

• Math has a lower median (center) and a wider spread.

Members of the drama club are getting measured for costumes. The dot plot below shows the height of distribution of the club in inches. Which statement about the data is true?

• The median is 54.5 and the IQR is 2.5"

• The median is 54 and the IQR is 2.5”

• The median is 53.5 and the IQR is 2”

• The median is 55 and the IQR is 3”

Members of the drama club are getting measured for costumes. The dot plot below shows the height of distribution of the club in inches. Which statement about the data is true?

• The median is 54.5 and the IQR is 2.5"

• The median is 54 and the IQR is 2.5”

• The median is 53.5 and the IQR is 2”

• The median is 55 and the IQR is 3”

The double dot plots show the average wait times in minutes for two popular rides at an amusement park. Compare the measures of center and variation, which ride typically has a longer wait time?

• No inference can be made from the graph.

• Topsy Turvy

• The wait times are the same for both rides.

• Rocket Blast

Which statement correctly describes the shapes of the dot plots for cars and SUVs?

• SUVs: symmetrical
  Cars: skewed left

• Both are skewed left

• Both are symmetrical

• SUVs: skewed right
  Cars: Skewed left

What is the difference in the median gas mileage?

• 0

• 5

• 7

Which number is not the mean, median, mode, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?

• 3

• 7

• 12

• 11