Exam 2: Organizing and Visualizing Variables

SCENARIO 2-10 The histogram below represents scores achieved by 200 job applicants on a personality profile. -Referring to the histogram from Scenario 2-10,the number of job applicants who scored 50 or above is_____ .

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,_____percent of the 600 were males who owned a portable Blu-ray player.

One of the developing countries is experiencing a baby boom,with the number of births rising for the fifth year in a row,according to a BBC News report.Which of the following is best for displaying this data?

When polygons or histograms are constructed,which axis must show the true zero or "origin"?

SCENARIO 2-10 The histogram below represents scores achieved by 200 job applicants on a personality profile. -Referring to the histogram from Scenario 2-10,the number of job applicants who scored between 30 and below 60 is_____ .

SCENARIO 2-1 An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.A representative from a local insurance agency selected a random sample of insured drivers and recorded,X,the number of claims each made in the last 3 years,with the following results. -Referring to Scenario 2-1,how many drivers are represented in the sample?

SCENARIO 2-3 Every spring semester,the School of Business coordinates a luncheon with local business leaders for graduating seniors,their families,and friends.Corporate sponsorship pays for the lunches of each of the seniors,but students must purchase tickets to cover the cost of lunches served to guests they bring with them.The following histogram represents the attendance at the senior luncheon,where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category. 1 -Referring to the histogram from Scenario 2-3,if all the tickets purchased were used,how many guests attended the luncheon?

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,_____percent of the cases were adjudicated within the first 2 years.

The Guidelines for Developing Visualizations recommend using varying scale to conserve precious space whenever possible.

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?

You have collected information on the market share of 5 different search engines used by U.S.Internet users in a quarter.Which of the following is the best for presenting the information?

Percentage polygons are plotted at the boundaries of the class groupings.

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 10 calls lasted 30 minutes or more,how many calls lasted less than 5 minutes?

SCENARIO 2-11 The ordered array below resulted from selecting a sample of 25 batches of 500 computer chips and determining how many in each batch were defective. Defects 1 2 4 4 5 5 6 7 9 9 12 12 15 17 20 21 23 23 25 26 27 27 28 29 29 -Referring to Scenario 2-11,construct a cumulative percentage polygon for the defects data if the corresponding frequency distribution uses "0 but less than 5" as the first class.

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,the person who visited the health club more than anyone else in the sample visited the facility_____ times.

SCENARIO 2-18 The stem-and-leaf display below shows the result of a survey on 50 students on their satisfaction with their school with the higher scores represent higher level of satisfaction. -Referring to Scenario 2-18,if a student is randomly selected,his/her most likely level of satisfaction will be in the 60s among the 40s,50s,60s,70s,80s and 90s.

The Guidelines for Developing Visualizations recommend using the simplest possible visualization.

A_____ is a summary table in which numerical data are tallied into class intervals or categories.

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?

SCENARIO 2-1 An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.A representative from a local insurance agency selected a random sample of insured drivers and recorded,X,the number of claims each made in the last 3 years,with the following results. -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