Statistical Questions, Dot Plots, and Histograms

What is the highest score in the class?

• 88%

• 100%

• 13

• 98%

How many students received a score in the 80's?

• 2

• 10

• 14

• 27

In Lisa’s math class, 6 students received test scores in the 91–100% range, 12 students received scores in the 81–90% range, and the other 2 students received scores in the 71–80% range. Which type of display would BEST represent the data? 

• histogram

• pictograph

• line plot

• Venn Diagram

Chanel studied the hours (per week) spent doing homework by 6th, 8th, and 10th graders. She made a dot plot and noticed that the students in 6th grade tend to spend less time on homework than students in 8th and 10th grade.

She also noticed that the homework times for 10th graders are more alike than the homework times for 8th graders.

Which dot plot represents 10th grade?

• 
• 
• 

If a dot plot has a cluster of dots around a specific value, what does it indicate about the data?

• The data is missing values around that specific value.

• The data is concentrated or has a high frequency of occurrences near that value.

• The data is perfectly normal and has no outliers.

• The data is evenly distributed across all values.

The following dot plot

(a)  

• skewed right

• skewed left

• symmetrical

Which of the following dot plots can be used to create the histogram?

• 
• 
• 
• 

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 true about the histogram?

• The tallest black cherry trees are between 85 and 90 feet in height. The data is not symmetrical. The range is 90 - 60 = 30 feet.

• The heights of the trees are distributed symmetrically.

• There is an outlier of 90 feet. The range is 10 - 0 = 10.

• The tallest black cherry trees are between 75 and 80 feet in height and the data is symmetrical. The outlier is 60 feet.

How many people watched more than 6 hours of TV?

• 10

• 5

• 20

• 17