Exam 3: Numerical Descriptive Measures

Which of the following is sensitive to extreme values?

TABLE 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 Table 2-12,if the sample is a good representation of the population,we can expect ________ percent of the males in the population will be against the plan.

A manufacturer of flashlight batteries took a sample of 130 batteries from a day's production and used them continuously until they were drained.The number of hours until failure were recorded.Given below is the boxplot of the number of hours it took to drain each of the 130 batteries.The distribution of the number of hours is

TABLE 2-18 The stem-and-leaf display below shows the result of a survey of 50 students on their satisfaction with their school,with the higher scores representing a higher level of satisfaction. -True or False: The Guidelines for Developing Visualizations recommend always starting the scale for a vertical axis at zero.

Which of the following statements about the median is not true?

TABLE 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 Table 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.

TABLE 2-18 The stem-and-leaf display below shows the result of a survey of 50 students on their satisfaction with their school,with the higher scores representing a higher level of satisfaction. -True or False: In real-world business analytics,filtering are typically performed on large data based on complex conditional relationship.

TABLE 2-18 The stem-and-leaf display below shows the result of a survey of 50 students on their satisfaction with their school,with the higher scores representing a higher level of satisfaction. -True or False: Double-clicking a cell in a PivotTable causes Excel to drill down and display the underlying data in a new worksheet.

True or False: A side-by-side bar chart is two histograms plotted side-by-side.

The smaller the spread of scores around the arithmetic mean,

True or False: An ogive is a cumulative percentage polygon.

TABLE 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 Table 2-12,________ percent of the 200 were males.

True or False: The main principle behind the Pareto chart is the ability to separate the "vital few" from the "trivial many."

True of False: To determine the width of class interval,divide the number of class groups by the range of the data.

Relationships in a contingency table can be examined more fully if the frequencies are converted into ________.

TABLE 2-18 The stem-and-leaf display below shows the result of a survey of 50 students on their satisfaction with their school,with the higher scores representing a higher level of satisfaction. -True or False: Given below is the scatter plot of the number of employees and the total revenue (millions$)of 20 U.S.companies.There appears to be a positive relationship between total revenue and the number of employees.

TABLE 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 Table 2-6,________ percent of the students in the sample went bar hopping the weekend before the midterm and did well on the midterm.

TABLE 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 Table 2-14,if the sample is a good representation of the population,we can expect ________ percent of the population will own a portable Blu-ray player.

TABLE 2-10 The histogram below represents scores achieved by 200 job applicants on a personality profile. -Referring to the histogram from Table 2-10,________ percent of the job applicants scored below 50.

TABLE 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 Table 2-7,the civil suit with the fourth shortest waiting time between when the suit was filed and when it was adjudicated had a wait of ________ months.