Chapter 2

         A _________ __________ is a table that shows classes or intervals of data entries with a count of the number of entries in each class.

• frequency distribution 
• data table
• frequency histogram
• data analysis

In frequency distribution , the class width is the distance between the lower and upper limits of a class. True or false?

• True
• False 

min=9, max=64, 7 classes; what is the class width, the lower class limits, and the upper class limits?

• Class width=8;lower class limits: 9,17,25,33,41,49,57;upper class limits: 16,24,32,40,48,56,65
• Class width=9;lower class limits: 9,17,25,33,41,49,57;upper class limits: 16,24,32,40,48,56,64
• Class width=8;lower class limits: 9,17,25,33,41,49,57;upper class limits: 16,24,32,40,48,56,64
• Class width=8;lower class limits: 10,17,25,33,41,49,57;upper class limits: 16,24,32,40,48,56,64

a circle that is divided into sectors that represent categories. the area of each sector is proportional to the frequency of each category

• dot plot
• pareto chart
• stem-and-leaf plot
• pie chart

what is a class that is the sum of the upper and lower limits of the class divided by two?

• midpoint
• histogram 
• class boundaries 
• cumulative frequency 

How is a Pareto chart different from a standard vertical bar graph?

• the pareto chart is not different from a standard vertical bar graph 
• in a Pareto chart, the height of each bar represents a pie chart and is postioned in order of increasing height with the shortest bar at the right
• In a Pareto chart, the height of each bar represents frequency or relative frequency and the bars are positioned in order of decreasing height with the tallest bar at the left
• All of the above 

What does a 5 number summary contain IN ORDER?

• 1.Minimum 2.Q1 3.Q2 4.Q3 5.Maximum
• 1.Minimum 2.Q1 3.median 4.Q3 5.Maximum
• 1.Maximum 2.Q3 3.Q1 4.Minimum 5.Q2
• Both A & B

which one of the following is NOT an example of descriptive statistics?

•  a historgram depicting the age distribution for 30 randomly elected professors
• an estimate of the number of Alaska residents who have visited canada
• a table summarizing the data collected in a sample of new car buyers
• the proportion of mailed out questionnaires that were completed and returned

Which of the following is an example of quantitative data?

• the number on a baseball uniform
•  the serial number on a one dollar bill
• the part number of an inventory
• the number of dependents you claim on your income tax form

the proper way to construct a stem and leaf display for the data set (62, 67 68 73 73 79 91 94 95 97)

• exclude a stem labeled 8
•  include stem 8 and enter no leaves on the stem
• include a stem labeled (8) and enter no leaves on the stem
• include a stem labeled 8 and enter one leaf value of 0