Exam 2: Organizing and Visualizing

A survey of 150 executives were asked what they think is the most common mistake Candidates make during job interviews.Six different mistakes were given.Which of the Following is the best for presenting the information?

True or False: Given below is the scatter plot of the price/earnings ratio versus earnings per share of 20 U.S.companies.There appears to be a negative relationship between price/earnings ratio and earnings per share.

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?

The point halfway between the boundaries of each class interval in a grouped frequency distribution is called the _______.

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

True or False: A research analyst was directed to arrange raw data collected on the yield of wheat, ranging from 40 to 93 bushels per acre, in a frequency distribution.He should choose 30 as the class interval width.

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, what was the highest level of satisfaction?

True or False: Determining the class boundaries of a frequency distribution is highly subjective.

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. 2-36 Organizing and Visualizing Variables -Referring to Scenario 2-13, construct a percentage polygon for the detergent data if the corresponding frequency distribution uses "9.0 but less than 10.0" as the first class.

Referring to Scenario 2-11, construct a histogram for the defects data, using "0 but less than 5" as the first class.

SCENARIO 2-6 A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following table contains the result. -Referring to Scenario 2-6, _______ percent of the students in the sample spent the weekend Studying and did well on the midterm.

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. -True or False: Referring to Scenario 2-18, the level of satisfaction is concentrated around 75.

True or False: Given below is the scatter plot of the price/earnings ratio versus earnings per share of 20 U.S.companies.There appear to be a positive relationship between price/earnings ratio and earnings per share.

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 1,000 calls were randomly sampled, how many calls lasted under 10 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. -Referring to Scenario 2-11, if a frequency distribution for the defects data is constructed, using "0 but less than 5" as the first class, the frequency of the "20 but less than 25" class would be ________.

SCENARIO 2-7 -Referring to Scenario 2-7, the civil suit with the longest wait between when the suit was filed and when it was adjudicated had a wait of ________ months.

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, if a frequency distribution with equal sized classes was made from this data, and the first class was "0 but less than 10," the class midpoint of the third class would be ________.

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 less than anyone else in the sample visited the facility ________ times.

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