Exam 2: Organizing and Visualizing Data

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 applicants scored below 20 or at least 50.

TABLE 2-14 The table below contains the number of people who own a portable DVD player in a sample of 600 broken down by gender. -Referring to Table 2-14,________ percent of the 600 did not own a portable DVD.

A professor of economics at a small Texas university wanted to determine what year in school students were taking his tough economics course.Shown below is a pie chart of the results.What percentage of the class took the course prior to reaching their senior year?

The relative frequency is the frequency in each class divided by the total number of observations.

TABLE 2-9 The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town. -Referring to Table 2-9,________ percent of the apartments rented for $600 or more.

A ________ is a vertical bar chart in which the rectangular bars are constructed at the boundaries of each class interval.

TABLE 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

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

TABLE 2-13 Given below is the stem-and-leaf display representing the amount of detergent used in gallons (with leaves in tenths of gallons)in a day by 25 drive-through car wash operations in Phoenix. 9 | 1 4 7 10 | 0 2 2 3 8 11 | 1 3 5 5 6 6 7 7 7 12 | 2 2 3 4 8 9 13 | 0 2 -Referring to Table 2-13,construct a percentage histogram for the detergent data,using "9.0 but less than 10.0" as the first class.

You have collected data on the responses to two questions asked in a survey of 40 college students majoring in businessWhat is your gender? (Male = M; Female =F)and What is your major? (Accountancy = A; Computer Information Systems = C; Marketing = M).Which of the following is the best for presenting the data?

TABLE 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 Table 2-18,how many students have a satisfaction level below 60?

Data on the number of part-time hours students at a public university worked in a week were collected.Which of the following is the best chart for presenting the information?

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

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,construct a table of column 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 against the plan.

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,of the males in the sample,________ percent were for the plan.

If you wish to construct a graph of a relative frequency distribution,you would most likely construct an ogive first.

TABLE 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 Table 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.

Data on 1,500 students' height were collected at a larger university in the East Coast.Which of the following is the best chart for presenting the information?

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,half of the job applicants scored below ________.