Exam 1: What Is Statistics

The science of collecting, organizing, presenting, analyzing, and interpreting data is called __________________.

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

When we make an estimate or prediction, we use _______________.

The branch of statistics that does not involve generalizations is called ______________.

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?

A marketing class of 50 students evaluated the instructor using the following scale: superior, good, average, poor, and inferior. The descriptive summary showed the following survey results: 2% superior, 8% good, 45% average, 45% poor, and 0% inferior.

Ranked data is an example of a(n) ____________ level of measurement.

What type of variable is the number of auto accidents reported in a given month?

The branch of statistics that uses sample information to make conclusions about a population is called _________________ statistics.

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

The principal difference between the interval and ratio scale of measurement is that the ratio scale has a __________________.

Categorizing students as freshmen, sophomores, juniors, and seniors is an example of the ______________ level of measurement.

What type of variable is "pounds of popcorn" served at a movie theater?

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.

A group of women tried five brands of fingernail polish and ranked them according to preference. What level of measurement is this?

A New York newspaper reported the average gasoline prices in four metropolitan areas and used a bar chart to illustrate the differences. What type of statistics was shown? What activities did the newspaper use to make the report?

Your height and weight are examples of which level of measurement?

Which of the following is an example of a continuous variable?

A store asks shoppers for their zip code to identify market areas. Zip codes are an example of ratio data.

An example of a qualitative variable is _________________.