The Nebraska Department of Agriculture has these data representing weekly growth (in inches) on samples of newly planted spring corn:

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Problems: Grouping and Displaying data to convey meaning

Problem-01: Grouping and Displaying data to convey meaning

Here the ages of 50 members of a county social service program Use these data to construct relative frequency distributions using 7 equal intervals and 13 equal intervals. State policies...

Problem-02: Grouping and Displaying data to convey meaning

TABLE: HIGH SCHOOL AND COLLEGE GRADE-POINT AVERAGES OF 20 COLLEGE SENIORS H.S.CollegeH.S.CollegeH.S.CollegeH.S.College 3.62.53.53.63.43.62.22.8 2.62.73.53.82.93.03.43.4 2.72.22.23.53.94.03.63.0 3.73.23.93.73.23.52.61.9 4.03.84.03.92.12.52.43.2 Arrange the data in an array from highest to lowest high school GPA....

Problem-03: Grouping and Displaying data to convey meaning

Transmission Fix-It stores recorded the number of service tickets submitted by each of its 20 stores last month as follows: The Company believes that a store cannot really hope to...

Problem-05: Grouping and Displaying data to convey meaning

The number of hours taken by transmission mechanics to remove, repair and replace transmissions in one of the Transmission Fix. It stores one day last week is recorded as follows:...

Problem-04: Grouping and Displaying data to convey meaning

Use the data from transmission Fix-It as followsThe company financial VP has set up what she calls a "store watch list", that is , a list of the stores whose...

Problem-06: Grouping and Displaying data to convey meaning

The orange County Transportation Commission is concerned about the speed motorists are driving on a section of the main highway. Here are the Speed of 458 motorists: 153245464239684718 314849565239486961 444238525558625848...

Problem-07: Grouping and Displaying data to convey meaning

POUNDS OF PRESSURE PER SQUARE INCH THAT CONCRETE CAN WITHSTAND 2500.22497.82496.92500.82491.62503.72501.32500.0 2500.82502.52503.22496.92495.32497.12499.72505.0 2490.52504.12508.22500.82502.22508.12493.82497.8 2499.22498.32496.72490.42493.42500.72502.02502.5 2506.42499.92508.42502.32491.32509.52498.42498.1 Arrange the data in an array from highest to lowest. Suppose that state law requires...

Problem-08: Grouping and Displaying data to convey meaning

A recent concerning the habits of U.S. cable television consumers produced the following data.

Problem-09: Grouping and Displaying data to convey meaning

The Environmental protection Agency took water Samples from 12 different rivers and streams that feed into lake Erie. These Samples were tested in the EPA laboratory and rated as to...

Problem-10: Grouping and Displaying data to convey meaning

Suppose that the admissions staff mentioned in the discussions of table 2-1 wishes to examine the relationship between a student differential on the collage SAT examination .

Problem-11: Grouping and Displaying data to convey meaning

High Performance Bicycle Products Company in Chapel Hill, North Carolina, Sampled its Shipping records for a certain day with these results: Construct a frequency distribution for these data and a...

Problem-12: Grouping and Displaying data to convey meaning

Mr.Franks, a Safety engineer for the Mars Point Nuclear Power Generating Station, has charted the peak reactor temperature each day for the past year and has prepared the following frequency...

Problem-13: Grouping and Displaying data to convey meaning

Universal Burger is concerned about product waste, so they sampled their burger waste record from the past year with the following results. Construct a frequency distribution for these data and...

Problem-14: Grouping and Displaying data to convey meaning

Construct a relative frequency distribution using intervals of 4.0 lb/sq in..

Problem-15: Grouping and Displaying data to convey meaning

The Bureau of Labor Statistics has sampled 30 communities nationwide and complied prices in each community at the beginning and end of August in order to find out approximately how...

Problem-16: Grouping and Displaying data to convey meaning

Sarah Anne Rapp, the president of Baggit, has just obtained some raw data from a marketing survey that her company recently conducted . The servery was taken to determine the...

Problem-17: Grouping and Displaying data to convey meaning

Here are the ages of 30 people who bought video recorders at symphony Music Shop last week:

Problem-18: Grouping and Displaying data to convey meaning

Use the data from

Problem-19: Grouping and Displaying data to convey meaning

John Lyon, owner of Fowler's Food Store in Chapel Hill, North Carolina, has arranged his customers purchase amounts last week into this frequency distributions:

Problem-20: Grouping and Displaying data to convey meaning

Here are the midpoints of the intervals for a distributions representing minutes it took the members of a university track team to complete a 5 mile cross-country run.

Problem-21: Grouping and Displaying data to convey meaning

Barney Mason has been examining the amount of daily french fry waste (in pounds) for the past 6 months at Universal Burger and has created the following frequency distribution.

Problem-22: Grouping and Displaying data to convey meaning

Construct a discrete, closed classification for the possible responses to the "marital status" portion of an employment application. also construct a 3-category, discrete, open-ended classification for the same responses.

Problem-23: Grouping and Displaying data to convey meaning

Stock exchange listings usually contain the company name, the high and low bids, the closing price, and the change from the previous day's closing price.

Problem-24: Grouping and Displaying data to convey meaning

The noise level in decibels of aircraft departing Westchester County Airport was rounded to the nearest decibel and grouped in a frequency distribution having intervals with midpoints at 100 and...

Problem-25: Grouping and Displaying data to convey meaning

If the lawyer defending the airport is collecting data preparatory to going to trial, would she approve of the midpoints of the intervals

Problem-26: Grouping and Displaying data to convey meaning

The president of Ocean Airlines is trying to estimate when the Federal Aviation Administration is most likely to rule on the company's application for a new route between Charlotte and...

Problem-27: Grouping and Displaying data to convey meaning

For the purpose of performance evaluation and quota adjustment, Ralph Williams monitored the auto sales of his 40 salespeople. Over a 1-month period, they sold the following number of cars:

Problem-28: Grouping and Displaying data to convey meaning

Kessler's Ice Cream Delight attempts to keep all of its 55 flavors of ice cream in stock at each of its stores. Their marketing research director suggests that keeping better...

Problem-29: Grouping and Displaying data to convey meaning

Doug Atkinson is the owner and ticket collector for a ferry that transports people and cars from Long Island to Connecticut.

Problem-30: Grouping and Displaying data to convey meaning

The following set of raw data givesincome and education level for a sample of individuals. Would rearranging the data help us to draw some conclusions? Rearrange the data in a...

Problem-31: Grouping and Displaying data to convey meaning

Here is a frequency distribution of the weight of 150 people who used a ski lift a certain day. Construct a histogram for these data. ClassFrequency 75–8910 90–10411 105–11923 120–13426...

Problem-32: Grouping and Displaying data to convey meaning

Central Carolina Hospital has the following data representing weight in pounds at birth of 200 premature babies. ClassFrequency 0.5–0.910 1.0–1.419 1.5–1.924 2.0–2.427 2.5–2.929 3.0–3.434 3.5–3.940 4.0–4.417 Construct an ogive that...

Problem-33: Grouping and Displaying data to convey meaning

Here is a frequency distribution of the length of phone calls made by 175 people during a Labor Day weekend.

Problem-34: Grouping and Displaying data to convey meaning

Golden Acres is a homeowners' association that operates a trailer park outside Orlando, Florida, where retirees keep their winter homes.

Problem-35: Grouping and Displaying data to convey meaning

Homer Willis, a fishing boat captain from Salter Path, North Carolina, believes that the break-even catch on his boats is 5,000 pounds per trip.

Problem-36: Grouping and Displaying data to convey meaning

The Massachusetts Friends of Fish has the following data representing pollutants (in parts per million) at 150 sites in the state.

Problem-37: Grouping and Displaying data to convey meaning

Before constructing a dam on the Colorado River, the U.S. Army Corps of Engineers performed a series of tests to measure the water flow past the proposed location of the...

Problem-38: Grouping and Displaying data to convey meaning

Pamela Mason, a consultant for a small local brokerage firm, was attempting to design investment programs attractive to senior citizens. She knew that if potential customers could obtain a certain...

Problem-39: Grouping and Displaying data to convey meaning

At a newspaper office, the time required to set the entire front page in type was recorded for 50 days. The data, to the nearest tenth of a minute, are...

Problem-40: Grouping and Displaying data to convey meaning

Chien-Ling Lee owns a CD store specializing in spoken-word recordings. Lee has 35 months of gross sales data, arranged as a frequency distribution. Monthly SalesFrequencyMonthly SalesFrequency $10,000–12,4992$20,000–22,4996 12,500–14,999422,500–24,9998 15,000–17,499725,000–27,4992 17,500–19,999527,500–29,9991...

Problem-41: Grouping and Displaying data to convey meaning

The National Association of Real Estate Sellers has collected these data on a sample of 130 salespeople representing their total commission earnings annually: EarningsFrequency $ 5,000 or less5 $ 5,001–$10,0009...

Problem-42: Grouping and Displaying data to convey meaning

Springfi eld is a college town with the usual parking problems. The city allows people who have received tickets for illegally parked cars to come in and make their case...

Problem-43: Grouping and Displaying data to convey meaning

The Nebraska Department of Agriculture has these data representing weekly growth (in inches) on samples of newly planted spring corn:

Problem-44: Grouping and Displaying data to convey meaning

The National Safety Council randomly sampled the tread depth of 60 right front tires on passenger vehicles stopped at a rest area on an interstate highway. From its data, it...

Problem-45: Grouping and Displaying data to convey meaning

The High Point Fastener Company produces 15 basic items. The company keeps records on the number of each item produced per month in order to examine the relative production levels....

Problem-46: Grouping and Displaying data to convey meaning

The administrator of a hospital has ordered a study of the amount of time a patient must wait before being treated by emergency room personnel. The following data were collected...

Problem-47: Grouping and Displaying data to convey meaning

In the population under study, there are 2,000 women and 8,000 men. If we are to select a sample of 250 individuals from this population, how many should be women...

Problem-48: Grouping and Displaying data to convey meaning

The U.S. Department of Labor publishes several classifi cations of the unemployment rate, as well as the rate itself. Recently, the unemployment rate was 6.8 percent. The department reported the...

Problem-49: Grouping and Displaying data to convey meaning

A sports psychologist studying the effect of jogging on college students’ grades collected data from a group of college joggers. Along with some other variables, he recorded the average number...

Problem-50: Grouping and Displaying data to convey meaning

A behavioral researcher studying the success of college students in their careers conducts interviews with 100 Ivy League undergraduates, half men and half women, as the basis for the study....

Problem-51: Grouping and Displaying data to convey meaning

If the following age groups are included in the proportions indicated, how many of each age group should be included in a sample of 3,000 people to make the sample...

Problem-52: Grouping and Displaying data to convey meaning

State University has three campuses, each with its own business school. Last year, State’s business professors published numerous articles in prestigious professional journals, and the board of regents counted these...

Problem-53: Grouping and Displaying data to convey meaning

A reporter wants to know how the cost of compliance with the Americans with Disabilities Act (ADA) has affected national hiring practices and sends out a form letter to 2,000...

Problem-54: Grouping and Displaying data to convey meaning

The following relative frequency distribution resulted from a study of the dollar amounts spent per visit by customers at a supermarket:

Problem-55: Grouping and Displaying data to convey meaning

The following responses were given by two groups of hospital patients, one receiving a new treatment, the other receiving a standard treatment for an illness. The question asked was, ‘‘What...

Problem-56: Grouping and Displaying data to convey meaning

The head of a large business department wanted to classify the specialties of its 67 members. He asked Peter Wilson, a Ph.D. candidate, to get the information from the faculty...

Problem-57: Grouping and Displaying data to convey meaning

Lesley Niles, a summer intern at the Internet Financial Services Corporation, has been asked to investigate the low participation rates in the company’s 401(k) investment program. Niles read an article...

Problem-58: Grouping and Displaying data to convey meaning

The Kawahondi Computer Company compiled data regarding the number of interviews required for each of its 40 salespeople to make a sale. Following are a frequency distribution and a relative...

Problem-59: Grouping and Displaying data to convey meaning

A. T. Cline, the mine superintendent of the Grover Coal Co., has recorded the amount of time per workshift that Section Crew #3 shuts down its machinery for on-the-spot adjustments,...

Problem-60: Grouping and Displaying data to convey meaning

Cline has obtained information on Section Crew #3’s coal production per shift for the same 35-shift period discussed in Exercise 2-69. The values are in tons of coal mined per...

Problem-61: Grouping and Displaying data to convey meaning

Virginia Suboleski is an aircraft maintenance supervisor. A recent delivery of bolts from a new supplier caught the eye of a clerk. Suboleski sent 25 of the bolts to a...

Problem-62: Grouping and Displaying data to convey meaning

The telephone system used by PHM, a mail-order company, keeps track of how many customers tried to call the toll-free ordering line but could not get through because all the...

Problem-63: Grouping and Displaying data to convey meaning

Hanna Equipment Co. sells process equipment to agricultural companies in developing countries. A recent office fire burned two staff members and destroyed most of Hanna’s business records. Karl Slayden has...

Problem-64: Grouping and Displaying data to convey meaning

Jeanne Moreno is analyzing the waiting times for cars passing through a large expressway toll plaza that is severely clogged and accident-prone in the morning. Information was collected on the...

Problem-65: Grouping and Displaying data to convey meaning

Maribor Cement Company of Montevideo, Uruguay, hired Delbert Olsen, an American manufacturing consultant, to help design and install various production reporting systems for its concrete roof tile factory. For example,...

Problem-66: Grouping and Displaying data to convey meaning

BMT, Inc., manufactures performance equipment for cars used in various types of racing. It has gathered the following information on the number of models of engines in different size categories...

Problem-67: Grouping and Displaying data to convey meaning

A business group is supporting the addition of a light-rail shuttle in the central business district and has two competing bids with different numbers of seats in each car. They...

Problem-68: Grouping and Displaying data to convey meaning

Jeanne Moreno’s employer, the state Department of Transportation, recently worked with a nearby complex of steel mills, with 5,000 employees, to modify the complex’s shift changeover schedule so that shift...

Grouping and Displaying data to convey meaning

Problem-43: Grouping and Displaying data to convey meaning

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