Exam 2: Presenting Data in Tables and Charts

In constructing a polygon, each class grouping is represented by its_____ and then these are consecutively connected to one another.

The stem-and-leaf display is often superior to the frequency distribution in that it maintains the original values for further analysis.

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.

The width of each class grouping or interval in a frequency distribution should be_________

$\text { TABLE 2-12 }$ 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. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -Referring to Table 2-12,____ percent of the 200 were males who were not against the plan.

It is essential that each class grouping or interval in a frequency distribution be___________ .

You have collected data on the monthly seasonally adjusted civilian unemployment rate for the United States from 1998 to 2007. Which of the following is the best for presenting the data?

$\text { TABLE 2-8 }$ 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. Stem Leaves 0 012222233333344566666667789999 1 1111222234444455669999 2 00011223455556889 3 0000446799 4 011345567 5 0077 6 8 7 67 8 3 9 0247 -Referring to Table 2-8, the person who visited the health club less than anyone else in the sample visited the facility _________ times.

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.

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

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?

$\text { TABLE 2-12 }$ 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. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -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.

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. Own a Portable DVD Player Male Female Yes 96 40 No 224 240 -Referring to Table 2-14, if the sample is a good representation of the population, we can expect _____percent of the males in the population will own a portable DVD.

TABLE 2-17 The following table presents total retail sales in millions of dollars for the leading apparel companies during April 2001 and April 2002. Apparel Company April 01 April 02 Gap 1,159.00 962 TJX 781.7 899 Limited 596.5 620.4 Kohl's 544.9 678.9 Nordstrom 402.6 418.3 Talbots 139.9 130.1 AnnTaylor 114.2 124.8 -Referring to Table 2-17, among the 8 stores, ______ saw a sales decline.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. TABLE 2- 5 The following are the durations in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. Relative Time (in Minutes) Frequency 0 but lessthan 5 0.37 5 but less than 10 0.22 10 but lessthan 15 0.15 15 but less than 20 0.10 20 but lessthan 25 0.07 25 but lessthan 30 0.07 30 or more 0.02 -Referring to Table 2-5, what is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes?

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. Stem Leaves 0 012222233333344566666667789999 1 1111222234444455669999 2 00011223455556889 3 0000446799 4 011345567 5 0077 6 8 7 67 8 3 9 0247 -Referring to Table 2-8, the person who has the largest leaf associated with the smallest stem visited the facility ____ times.

When constructing charts, the following is plotted at the class midpoints:

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?

In general, a frequency distribution should have at least 8 class groups but no more than 20.

Apple Computer, Inc. collected information on the age of their customers. 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 diagram.