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Q:
What are the advantages and disadvantages of open-end questions in either a written survey or a personal interview?
Q:
Discuss the steps involved in developing and carrying out a written survey.
Q:
Explain what an experimental design is.
Q:
Discuss the differences and similarities between statistical estimation and statistical hypothesis testing.
Q:
What is meant by the term statistical inference?
Q:
Data collected at a fixed point in time are:
A) time-series data.
B) approximate time-series data.
C) cross-sectional data.
D) panel data.
Q:
When data are organized into levels, the highest data level is:
A) interval level data.
B) nominal level data.
C) ordinal level data.
D) ratio level data.
Q:
A college data base includes the number of people who are enrolled in each class the college offers. This is an example of:
A) nominal data.
B) ordinal data.
C) interval data.
D) ratio data.
Q:
Weekly stock closing prices for IBM would be classified as which of the following?
A) Cross-sectional data
B) Time-series data
C) Nominal data
D) Ordinal data
Q:
The human resources department at a major high tech company recently conducted an employee satisfaction survey of 100 of its 3,000 employees. Data were collected on such variables as age, gender, marital status, current salary, level of overall satisfaction on a scale from 1 to 5, number of years with the company, and job title. Which of the variables would be considered to be qualitative data?
A) Gender, marital status, job satisfaction, and job title
B) Age
C) Years with the company
D) All variables listed are qualitative.
Q:
The human resources department at a major high tech company recently conducted an employee satisfaction survey of 100 of its 3,000 employees. Data were collected on such variables as age, gender, marital status, current salary, level of overall satisfaction on a scale from 1 to 5, number of years with the company, and job title. Which of the variables would be classified as nominal level data?
A) Age and years with the company
B) Overall satisfaction
C) Gender, marital status, and job title
D) Age and gender
Q:
The human resources department at a major high tech company recently conducted an employee satisfaction survey of 100 of its 3000 employees. Data were collected on such variables as age, gender, marital status, current salary, level of overall satisfaction on a scale from 1 to 5, number of years with the company, and job title. Which of the variables listed are considered to be ratio level data?
A) Age and years with the company
B) Gender and marital status
C) Job title
D) None of the variables is ratio level.
Q:
The high temperature is recorded each day for a period of 1 year. This is an example of:
A) nominal data.
B) ordinal data.
C) time-series data.
D) cross-sectional data.
Q:
The human resources department at a major high tech company recently conducted an employee satisfaction survey of 100 of its 3,000 employees. Data were collected on such variables as age, gender, marital status, current salary, level of overall satisfaction on a scale from 1 to 5, number of years with the company, and job title. Considering the age variable where employees were asked to list their age at their last birthday, which of the following best describes the level of data measurement for that variable?
A) Interval level
B) Nominal level
C) Ratio level
D) Cross-sectional data
Q:
The human resources department at a major high tech company recently conducted an employee satisfaction survey of 100 of its 3,000 employees. Data were collected on such variables as age, gender, marital status, current salary, level of overall satisfaction on a scale from 1 to 5, number of years with the company, and job title. Which of the following best describes the overall data set that was generated from the study?
A) Cross-sectional data
B) Time-series data
C) Nominal data
D) Quantitative data
Q:
General Electric Corporation tracks employee turnover annually. It currently has a data set that contains turnover for the past 20 years. What type of data does it have?
A) Time-series data
B) Cross-sectional data
C) Nominal data
D) Ordinal data
Q:
When a survey uses the responses strongly disagree, disagree, neutral, agree, strongly agree, this is an example of:
A) nominal data.
B) ordinal data.
C) interval data.
D) ratio data.
Q:
Which one of the following is NOT statistical sampling?
A) Simple random sample
B) Stratified random sampling
C) Cluster sampling
D) Convenience sampling
Q:
A sampling plan that requires a person to interview 100 people as they exit a department store would most likely be:
A) a simple random sample.
B) a convenience sample.
C) a systematic random sample.
D) a stratified sample.
Q:
In Excel, what procedure is used to select random numbers?
A) The random numbers function
B) Click on the Data tab, then click on Data Analysis, then click on Sampling
C) Click on the Data tab, then click on Data Analysis, then click on Random Number Generation
D) Random numbers are not available in Excel.
Q:
Which of the following statements is true?
A) Random samples are easier to select than nonstatistical samples.
B) Nonstatistical samples can provide useful data.
C) Stratified random sampling involves breaking the population down into geographic subgroups.
D) Systematic sampling is an example of nonstatistical sampling.
Q:
A value computed from a population is called:
A) a statistic.
B) a real number.
C) a parameter.
D) a point estimate.
Q:
The human resources department at a major high tech company plans to conduct an employee satisfaction study by sampling 100 employees from the 3,000 total employees. They plan to use systematic random sampling since the employee file is in alphabetic order. The first employee selected in the study should be:
A) the 30th employee.
B) employee 1 to 30 randomly selected.
C) employee 1 to 100 randomly selected.
D) the first employee.
Q:
The mayor of a large U.S. city is interested in addressing complaints from many property owners regarding recent property assessments. Many people feel that they are being overtaxed and that their assessments are too high. To study this issue, the mayor plans to hire consultants to randomly select homes in the city and have these homes independently assessed for value. However, she is concerned that the cost of sampling will be very high since the city is spread out over a wide geographical area. To potentially reduce the cost of sampling, which of the following statistical sampling techniques should be applied?
A) Cluster sampling
B) Ratio sampling
C) Simple random sampling
D) Stratified random sampling
Q:
Some stores and restaurants have "tell us what you think" cards available for customers. Assuming that angry customers are more likely to take the time to fill these out, this is an example of:
A) simple random sampling.
B) stratified sampling.
C) cluster sampling.
D) nonstatistical sampling.
Q:
A food warehouse manager plans to conduct a check on damaged packages. The warehouse covers a large area and products are spread out over the entire building. Assuming that no products are more likely to have damaged packages than any other, what statistical sampling method would be used to reduce the time and effort required to do the study?
A) Convenience sampling
B) Stratified random sampling
C) Cluster random sampling
D) Systematic random sampling
Q:
If a stratified random sample is to be conducted, which of the following is true?
A) The population will be broken down into subgroups called strata.
B) Each subgroup should contain items that are homogeneous with respect to the characteristic of interest.
C) If effective, the total required sample size should be less than that which would be needed if a simple random sample were selected.
D) All of the above.
Q:
If a systematic random sample is to be selected of size 100 from a population with 5,000 items, the first item selected from the ordered population will be:
A) randomly selected between 1 and 100.
B) randomly selected between 1 and 50.
C) any randomly selected value between 1 and 5,000.
D) item 50.
Q:
In order to determine a parameter (such as a mean) of a population you would need to conduct a:
A) population.
B) random sample.
C) census.
D) statistic.
Q:
The Polson Pole and Fence Company recently did a quality check on the length of fence posts. To do this, each of the 400 posts in inventory was numbered. Numbers from 1 to 400 were placed in a bowl. Twenty numbers were selected from the bowl without looking. These 20 poles were the ones selected for the study. This type of sampling is called:
A) cluster sampling.
B) simple random sampling.
C) nonstatistical.
D) convenience sampling.
Q:
A grocery store is interested in determining whether its customers are satisfied with the quality of service provided. To collect the necessary data, interviewers have been hired to stand near the store's exits and to survey customers who have the time and interest to be surveyed. This type of sampling is called:
A) systematic random sampling.
B) ratio sampling.
C) convenience sampling.
D) stratified sampling.
Q:
Another term used for statistical sampling is:
A) probability sampling.
B) convenience sampling.
C) ratio sampling.
D) numerical sampling.
Q:
A professor hands out survey forms during her classes, where the population is all students attending the college. This is an example of:
A) a convenience sample.
B) a simple random sample.
C) a stratified sample.
D) a cluster sample.
Q:
An Internet service provider has the capability of tracking the time that each of its customers spends connected to the Internet during a month. These data would constitute:
A) a simple random sample.
B) a convenience sample.
C) a cluster sample.
D) a population.
Q:
When an accounting auditor randomly selects 20 accounts from all the accounts to check for accuracy, she has selected:
A) a personal observation.
B) a sample from the population.
C) a census.
D) a convenience sample.
Q:
One of the major challenges for developing a good written questionnaire or telephone survey instrument is that:
A) nonresponses are too high.
B) there will always be missed data.
C) bias cannot be controlled.
D) wording can influence responses.
Q:
In conducting a personal interview, what problem can result if the interviewer is allowed to arbitrarily decide who should be interviewed?
A) Nonresponses
B) Missing data
C) Bias
D) Poor response rate
Q:
A consumer products company wants to interview customers regarding a new product. If it wishes to adhere to a predetermined pattern of questions in the interview, which of the following would likely be used?
A) Structured interview
B) Open-end questioning
C) Unstructured interview
D) Written questionnaire
Q:
Which of the following types of questions provide the respondent with the greatest choice in responding to a question?
A) Open-end questions
B) Close-end questions
C) Multiple choice questions
D) True/false questions
Q:
For which data collection method is it most important to have a polished-looking survey form?
A) Telephone survey
B) Written questionnaire
C) Experimental design
D) Personal interview
Q:
In developing and conducting a survey, what is the purpose of the pre-test phase?
A) To make sure that the cost of developing the survey instrument is not too great
B) To generate initial data for analysis
C) To catch any problems with the questionnaire before it is fully administered
D) To make sure that the respondents like the issues being addressed by the survey
Q:
Which of the following data collection methods is most likely to generate the largest nonresponse?
A) Mail surveys
B) Direct observation
C) Telephone surveys
D) Personal interviews
Q:
A tire manufacturing company is interested in obtaining data on stopping distances for each of the three main tread types made by the company. The data collection method that would be most likely used in this case would be:
A) telephone survey.
B) written questionnaire.
C) demographic surveying.
D) experiments.
Q:
An Internet service provider wants to determine its level of customer satisfaction. The best data collection method to obtain the results most quickly is:
A) experiment.
B) telephone survey.
C) mailed survey.
D) personal interview.
Q:
The Dalton Company has recently made a decision to build a new plant in Denver. In making this decision it used data supplied by the U.S. Census Bureau. For the Dalton Company, these data are examples of:
A) primary data.
B) secondary data.
C) reliable data.
D) experimental data.
Q:
A company conducted a survey of its employees to determine their level of satisfaction with various company policies. The data collected from this survey are:
A) primary data.
B) secondary data.
C) experimental data.
D) census data.
Q:
A company is interested in determining which of several advertising layouts is most effective at generating additional sales. The data collection tool that would most likely be used in this situation is:
A) telephone survey.
B) mail questionnaire.
C) experiment.
D) observation.
Q:
Based on a survey of 400 students in a university in which 20 percent indicated that they were business majors. The university student newspaper reported that "20 percent of all the students at the university are business majors." This report is an example of:
A) a sample.
B) a population.
C) statistical inference.
D) descriptive statistics.
Q:
The summaries of data, which may be in forms of tabular, graphical, or numerical, are referred to as:
A) inferential statistics.
B) descriptive statistics.
C) statistical inference.
D) report generation.
Q:
When the California Highway Patrol states that a study of drivers on a rural highway shows that the average speed is between 62.5 mph and 64.5 mph, they are most likely basing this statement on:
A) descriptive statistics.
B) estimation.
C) hypothesis testing.
D) graphical analysis.
Q:
The company that makes a new weight loss pill claims that people who use this pill according to instructions will lose an average of 20 pounds during a four-month period. They say the claim is based on a study of 300 people. Which of the following statistical methods was most likely used to arrive at the company's conclusion?
A) Estimation
B) Hypothesis testing
C) Histograms
D) Bar charts
Q:
A political poll that is used to indicate the percentage of voters who will vote for a particular candidate makes use of which of the following?
A) Hypothesis testing
B) Numerical analysis
C) Estimation
D) Both B and C
Q:
Estimation and hypothesis testing are categories of:
A) inferential statistics.
B) descriptive statistics.
C) numerical measurement.
D) statistical charts.
Q:
The Biltmore Hotel manager is getting ready to make a presentation that she hopes will justify adding additional staff. As part of the presentation, she has constructed charts and graphs. The general type of statistical analysis she is using is:
A) hypothesis testing.
B) estimation.
C) inferential statistics.
D) descriptive statistics.
Q:
A consumer products company is considering introducing a new product nationally. To help make the decision, it first conducts a test market by selling the product for a few months in one city. This is an example of:
A) descriptive statistics.
B) charts and graphs.
C) estimation.
D) hypothesis testing.
Q:
Recently, a major tire manufacturer stated in its advertising that its tires with a new tire tread design will last more than 50,000 miles on average. A consumer agency collected a subset of these tires and tested them in very controlled conditions. Based on this test, the agency concluded that the manufacturer was justified in making this claim. The process described is an example of:
A) descriptive statistics.
B) hypothesis testing.
C) statistical inference.
D) Both B and C are correct.
Q:
When the park ranger at Yellowstone National Park reports the average length of time that visitors spend in the park, he is using:
A) graphical tools.
B) numerical measures.
C) statistical charts.
D) histograms or bar charts.
Q:
When a marketing manager surveys a few of the customers for the purpose of drawing a conclusion about the entire list of customers, she is applying:
A) inferential statistics.
B) descriptive statistics.
C) quantitative models.
D) numerical measures.
Q:
Which of the following is an example of graphs used to describe data?
A) Histograms
B) Bar charts
C) Both A and B are correct.
D) None of the above.
Q:
When an administrator at a local hospital prepares a series of charts and graphs pertaining to the patients that have stayed at the hospital during the past month, she is using which general category of statistical analysis?
A) Quantitative statistics
B) Inferential statistics
C) Descriptive statistics
D) Random sampling
Q:
The use of charts and graphs is an example of:
A) descriptive statistics.
B) inferential statistics.
C) estimation.
D) hypothesis testing.
Q:
A small engine repair shop tracks the number of customers who call each day. This variable is a time-series variable and also ratio level.
Q:
A survey conducted by a local real estate agency asked respondents to indicate whether they preferred natural gas, electric, or oil furnaces for heating their home. The data collected for this variable would be of ordinal level.
Q:
A cell phone service provider has 14,000 customers. Recently, the sales department selected a random sample of 400 customer accounts and recorded the number of minutes of long distance time used during the previous billing period. The company analyst used Excel to sort these values in order from high to low. She then assigned the highest value a rank of 1, the next highest value a rank of 2, and so forth. These ranks would be considered to be ordinal data.
Q:
A cell phone service provider has 14,000 customers. Recently, the sales department selected a random sample of 400 customer accounts and recorded the number of minutes of long distance time used during the previous billing period. The data for this variable is considered to be nominal since the values are based on sample data.
Q:
If you have an ordinal variable, it is possible to precisely measure the magnitude of the difference between the possible values of the variable.
Q:
The difference between interval data and ratio data is that interval data has a natural zero.
Q:
A major fast-food chain has installed a device that measures the temperature of the hamburgers on the grill. These data are stored in a computer file. If you were to analyze these data, you would be working with ordinal level data.
Q:
Flavors of ice cream (chocolate, vanilla, strawberry, etc.) are an example of nominal data.
Q:
Recently, a bank manager pulled a sample of customer accounts and recorded data for two variables, checking account balance and total number of transactions during the previous 30 days. The data collected would be considered time-series data.
Q:
Data collected on marital status (married, divorced, single, other) would be an ordinal level variable.
Q:
Cross-sectional data is a set of data values observed at successive points in time.
Q:
A variable that has all the properties of an interval variable, but also has a true zero, is a ratio level variable.
Q:
A variable, i.e., the length of time it takes for an employee to complete an assembly procedure at an automotive plant, is a ratio level variable.
Q:
On a survey, amount of education is recorded as some high school, high school graduate, some college, college graduate, etc. This is an example of ordinal data.
Q:
At the end of the school term, students are asked to rate the course and instructor by indicating on a scale of 1-5 how well they liked the course. The data generated from this question are examples of ordinal data.
Q:
Nominal data is the highest level of data.
Q:
When customers return a product to a store and the store asks the customer to indicate the reason that the merchandise was returned, the resulting data are quantitative since multiple people will be providing the data.
Q:
Recording vehicle type as sedan, minivan, pick-up truck, etc. is an example of qualitative data.
Q:
Sales data measured each week for the past twenty weeks are examples of time-series data.