Exam 1: Data and Statistics

Exhibit 1-4 In many universities, students evaluate their professors by means of answering a questionnaire. Assume a questionnaire is distributed to a class of 45 students. Students are asked to answer the following: 1. Sex 2. Race (Black, White, Other) 3. Age 4. Number of hours completed 5. Grade point average "6. My instructor is a very effective teacher " -Refer to Exhibit 1-4. How many variables are in this data set?

Exhibit 1-3 Part of the data bank of a corporation is shown below. -Refer to Exhibit 1-3. Employee Number is an example of ________ data.

The ratio scale of measurement has the properties of

Arithmetic operations are appropriate for

The number of cases will always be the same as the number of

The process of capturing, storing, and maintaining data is known as

Data collected over several time periods are

The following is a frequency distribution of the monthly expenditures for gasoline of 400 households in Chattanooga. What is the cumulative relative frequency of the 3rd class?

Quantitative data

In a data set, the number of elements will always be the same as the number of

Exhibit 1-5 The following is a frequency distribution of the monthly expenditures for long distance telephone service of 200 households in Chattanooga. -Refer to Exhibit 1-5. What percentage of households have monthly expenditure for long distance service between $40 and $100?

In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a

Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)

A survey to collect data on the entire population is

Which of the following is the correct number of classes in a frequency distribution?

Statistical studies in which researchers control variables of interest are

In experimental studies, the variable of interest

An interviewer has made an error in recording the data. This type of error is known as

Some hotels ask their guests to rate the hotel's services as excellent, very good, good, and poor. This is an example of the

Exhibit 1-5 The following is a frequency distribution of the monthly expenditures for long distance telephone service of 200 households in Chattanooga. -Refer to Exhibit 1-5. What is the proportion of households with monthly expenditure for long distance service of either below $60 or at least $100?