Exam 1: The Where, why, and How of Data Collection

When an accounting auditor randomly selects 20 accounts from all the accounts to check for accuracy,she has selected:

Nominal data is the highest level of data.

A common underpinning of all statistical sampling techniques is the concept of random selection.

Hypothesis testing and estimation are two statistical tools that are used to draw inferences about a large data set based on a subset of the data.

Which of the following data collection methods is most likely to generate the largest nonresponse?

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.

Descriptive statistics allow a decision maker to reach a conclusion about a populations based on a subset from the population.

The First National Bank mailed out a survey to all 3,456 savings account customers.A total of 568 surveys were returned.Values computed from the returned surveys would constitute parameters since all customers were surveyed.

Explain what an experimental design is.

When data are organized into levels,the highest data level is:

A histogram is an example of a numerical measure.

When a small sample is used,a stratified random sample is more likely to provide the desired information than a simple random sample.

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?

It is possible for the same survey questionnaire to yield both quantitative and qualitative data.

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.

Data collected on marital status (married,divorced,single,other)would be an ordinal level variable.

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 professor hands out survey forms during her classes,where the population is all students attending the college.This is an example of:

Descriptive statistical tools include graphs,charts,and numerical measures.

It is possible for a nonstatistical sample to yield statistics that have values closer to the corresponding parameter than will a statistical sample.