Exam 2: Organizing and Visualizing Variables

In a contingency table, the number of rows and columns

Apple Computer, Inc.collected information on the age of their customers. Suppose the youngest customer was 12 and the oldest was 72.To study the distribution of the age among its customers, it can use a Pareto chart.

SCENARIO 2-17 The following table presents total retail sales in millions of dollars for the leading apparel companies over a two-year period in the past. -Referring to Scenario 2-17, construct a table of column percentages.

When comparing two or more large sets of numerical data, the distributions being developed should use the same ________.

SCENARIO 2-5 The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. -Referring to Scenario 2-5, if 100 calls were randomly sampled, _______ of them would have lasted at least 15 minutes but less than 20 minutes

SCENARIO 2-7 The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court. -Referring to Scenario 2-7, if a frequency distribution with equal sized classes was made from this data, and the first class was "10 but less than 20," the cumulative percentage of the second class would be ________.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-14, of those who did not own a portable Blu-ray player in the sample, ________ percent were males.

The Guidelines for Developing Visualizations recommend labeling all axes only when it is possible.

SCENARIO 2-7 The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court. -Referring to Scenario 2-7, if a frequency distribution with equal sized classes was made from this data, and the first class was "10 but less than 20," the relative frequency of the third class would be ________.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-14, if the sample is a good representation of the population, we can expect _______ percent of those who own a portable Blu-ray player in the population will be males.

You have collected information on the consumption by the 15 largest coffee-consuming nations.Which of the following is the best for presenting the shares of the consumption?

It is essential that each class grouping or interval in a frequency distribution be ________ and ________.

SCENARIO 2-12 The table below contains the opinions of a sample of 200 people broken down by gender about the latest congressional plan to eliminate anti-trust exemptions for professional baseball. -Referring to Scenario 2-12, if the sample is a good representation of the population, we can expect _______ percent of the population will be males.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-14, construct a table of row percentages.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-14, construct a table of column percentages.

A type of vertical bar chart in which the categories are plotted in the descending rank order of the magnitude of their frequencies is called a

SCENARIO 2-9 The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town. -Referring to Scenario 2-9, the class midpoint of the second class is ________.

SCENARIO 2-13 Given below is the stem-and-leaf display representing the amount of detergent used in gallons (with leaves in 10ths of gallons)in a day by 25 drive-through car wash operations in Phoenix. -Referring to Scenario 2-13, construct a cumulative percentage distribution for the detergent data if the corresponding frequency distribution uses "9.0 but less than 10.0" as the first class.

You have collected data on the monthly seasonally adjusted civilian unemployment rate for the United States over a 10-year period.Which of the following is the best for presenting the data?

SCENARIO 2-8 The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility. -Referring to Scenario 2-8, ________ of the 100 members visited the health club no more than 12 times in a year.