Exam 1: What Is Statistics

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

Categorizing voters as Democrats, Republicans and Independents is an example of interval level measurement.

The CIA World Factbook cited these numbers for the United States: * Birthrate is 14.14 births per 1,000 population * Average life expectancy for females is 80 years * Approximately 290 million persons residing in the United States Each of these numbers is referred to as statistic.

A listing of 100 family annual incomes is an example of statistics.

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

Shoe style is an example of what level of measurement?

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.

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.

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

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

What level of measurement is a person's "favorite sport"?

Respondents were asked, "Do you now earn more than or less than you did five years ago?" What is this level of measurement?

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

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.

What level of measurement is the Centigrade temperature scale?

An ordinal level of measurement implies some sort of ranking.

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

The branch of mathematics used to facilitate the collection, organization, presentation, analysis and interpretation of numerical information is referred to as statistics.

The "lowest" level of measurement is ___________.

To infer something about a population, we usually take a sample from the population.