Dot Plot and Measures of Center

The dot plot above shows the heights of 15 softball players at NGHS. What percentage of the students are above 5'4?

• 3%

• 20%

• 30%

• 52.9%

• 53.3%

Which statement below best describes the the overall shape of the dot plot?

• Data is symmetrical, peak at 2, gap at 5

• Data is skewed to the right, peak at 1&3, cluster at 2

• Data is symmetrical, peak at 1&3, no gaps

• Data is symmetrical, peak at 2, no gaps

• Data is skewed left, cluster at 1-3, peak at 2, gap at 5

Which statement below best describes the overall shape of the dot plot?

• Peak at 4, gap at 10, skewed right, cluster at 12

• Peak at 3 & 5, skewed right, gap at 12

• Peak at 4, skewed right, gap at 10&11, outlier at 12

• Peak at 4, gap at 10 & 11, data is skewed left

• Peak at 4, cluster at 3-5, gap at 10&11, skewed left

What percent of the trees had more than 4 birds?

• 51%

• 53

• 54.2%

• 79.2%

What amount of birds in the trees makes up 12.5% of the data?

• 5

• 6

• 7

• 8

Above is a dot plot describing the number of books read last summer by 20 NGMS students. Which statement best describes the overall shape of the dot plot?

• Data is skewed right, peak at 6, gap at 6

• Peak at 1, data is skewed left, gap at 6, data is symmetrical

• Data is skewed right, cluster at 0-2, peak at 1, gap at 6 & 10

• Gap at 6, data is skewed right, cluster at 0-2, peak at 1

• Cluster 3-5, peak at 1, gap at 6

What percentage of the trees had at least 7 birds?

• 12.5%

• 16.7%

• 20.8%

• 87.5%

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

• 0 tickets

• 2 tickets

• 4 tickets

• 6 tickets

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.

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