Business Analytics Midterm (Concepts)

The names of the positions in a corporation, such as chief operating officer or controller, are examples of what type of variable?

Qualitative

What type of variable is the number of robberies reported in your city?

Quantitative

When statisticians analyze sample data in order to draw conclusions about the characteristics of a population, this is referred to as:

Statistical inference

The average number of passengers on commercial flights between Chicago and New York City is an example of a statistic.

True

The number of children in a family is a discrete variable.

True

When TV advertisements report "2 out of 3 dentists surveyed indicated they would recommend Brand X toothpaste to their patients," an informed consumer may question the conclusion because the:

Advertisement does not include the total number of dentists surveyed.

An example of a qualitative variable is _________________.

Color of ink in a pen

What type of variable is the number of gallons of gasoline pumped by a filling station during a day?

Continuous

Descriptive statistics are used to find out something about a population based on a sample.

False

If we select 100 persons from 25,000 registered voters and question them about candidates and issues, the 100 persons are referred to as the population.

False

The Union of Electrical Workers of America with 9,128 members polled 362 members about a new wage package that will be submitted to management. The population is the 362 members.

False

The order that runners finish in a race would be an example of continuous data.

False

A survey includes a question regarding marital status that has the following responses: single, married, divorced, separated, or widowed. What is the scale of measurement for this question?

Nominal

The Equal Employment Opportunity Act requires employers to classify their employees by gender and national origin. Which level of measurement is this?

Nominal

A university wishes to conduct a student survey. In one of the questions students are asked to mark their gender as either male or female. Gender is an example of the:

Nominal scale

The final rankings of the top 20 NCAA college basketball teams are an example of which level of measurement?

Ordinal

A population is a collection of all individuals, objects, or measurements of interest.

True

A sample is a portion or part of the population of interest.

True

Based on a sample of 3,000 people, the civilian unemployment rate in the United States was 5.5%. 5.5% is referred to as a statistic.

True