Exam 3: Numerical Descriptive Measures

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,________ percent of the cases were not adjudicated within the first 4 years.

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 those who own a portable Blu-ray player in the population will be males.

In perfectly symmetrical distributions,which of the following is NOT a correct statement?

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,of the females in the sample,________ percent did not own a portable Blu-ray player.

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 using the simplest possible visualization.

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,________ percent of the 600 were males who did not own a portable Blu-ray player.

In general,which of the following descriptive summary measures cannot be easily approximated from a boxplot?

TABLE 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 Table 2-8,the person who visited the health club more than anyone else in the sample visited the facility ________ times.

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: A multidimensional contingency table allows you to tally the responses of more than two continuous variables.

True or False: A good choice for the number of class groups to use in constructing frequency distribution is to have at least 5 but no more than 15 class groups.

According to the Chebyshev rule,at least 93.75% of all observations in any data set are contained within a distance of how many standard deviations around the mean?

According to the empirical rule,if the data form a "bell-shaped" normal distribution,________ percent of the observations will be contained within 2 standard deviations around the arithmetic mean.

In a perfectly symmetrical bell-shaped "normal" distribution,

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 who were not against the plan.

True or False: 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.

True or False: The percentage polygon is formed by having the lower boundary of each class represent the data in that class and then connecting the sequence of lower boundaries at their respective class percentages.

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 females who were against the plan.

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 labeling all axes only when it is possible.

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: Referring to Table 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.

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 females in the population will not own a portable Blu-ray player.