Chapter 14 Review

Which interval has 400 employees?

• 33-43
• 0-10
• 77-87
• 66-76

Observe the frequency distribution:

What is the midpoint of the first class?

• 4

• 5

• 1

• 3

Observe the histogram and choose the frequency distribution that corresponds to it.

• 
• 

The following data set shows the minutes spent on internet by 50 internet users. Find the range.

• 86

• 7

• -79

• 79

Elliot says almost everyone arrived at the party after 10:00 P.M., but Nancy thinks most people came earlier. When did a majority of the people arrive? 

• 7:00-7:59 P.M.
• 8:00–8:59 P.M.
• 9:00–9:59 P.M.
• 10:00–10:59 P.M. 

Mr. Semo is making a histogram to show the scores on the last science test. He first lists the scores in a stem-and-leaf plot. How many units tall should the bar be for the interval 70-79?

• 2
• 5
• 9
• 11

Base your response on the following data:  
3, 5, 2, 5, 4, 7, 1, 0, 6, 4, 8, 5, 3, 2, 4, 5, 9.  
How many times were 6-8 goals scored? 

• 1
• 2
• 3
• 4

What is an interval?

• A single number
• A range of numbers
• A percentage
• A total amount

What represents frequency in this histogram?

• Profit
• Year

Find the mean?

• 3.3

• 99

• 97.4

• 98