Statistics Unit Review

A teacher asked 20 students how many books they read last summer. The dot plot displays the data. What is the greatest number of books a student read?

• 1
• 2
• 9
• 10

Describe the shape of the data in the dot plot below.

• Symmetric

• Skewed Right

• Skewed Left

• Uniform

What kind of a question is this: You ask your math teacher, "How many students earned an A on our statistics quiz?"

• Non-Statistical Question
• Statistical Question

What kind of a question is this: You ask your parents, "Can I go to the movies tonight?"

• Non-Statistical Question
• Statistical Question

What kind of question is this: You ask people in an airport, "How many states have you visited?"

• Statistical Question
• Non-Statistical question

To find the average of a set of numbers, add up all the items and divide by...

• 2
• The minimum
• The maximum
• The number of items

Find the mean of these numbers:
5, 11, 2, 12, 4, 2

• 4.1
• 6
• 4.5
• 4

Dr. Jones is a dentist. He needs to report on the average number of cavities that his patients have.
1, 0, 1, 5, 6, 3, 4

• 3.33
• 2.85
• 3
• 3.5

What percent of students have a height between 58 inches and 60 inches?

• 25%
• 50%
• 75%
• 100%

What is the interquartile range (IQR) of the data set?

• 20
• 25
• 5
• 10