Intro to Statistics

This deals with the collection, analysis, interpretation, and presentation of data.

• Algebra

• Calculus

• Statistics

• Trigonometry

Which of the following is considered descriptive statistics?Check all that apply.

• Organizing data

• Summarizing data

• Making statistical inference

Identify the population:

A survey of 500 adults in the U.S. found found that 54% drink daily coffee.

• A collection of the 500 adults surveyed

• Collection of all adults in the U.S.

• 54%

• 500

Identify the sample:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A collection of the 500 adults surveyed

• Collection of all adults in the U.S.

• 54%

• 500

In the statement "A survey of 500 adults in the U.S. found that 54% drink coffee", 54% is a parameter.

• True

• False

The costs of items in a shopper's grocery cart represent (a)   data.

A national survey asked 1261 U.S. adult fast-food customers which meal (breakfast, lunch, dinner, snack) they ordered. What is the variable?

• meal

• U.S. adult fast-food customers

• 1261 U.S. adult fast-food customers

• national survey

A national survey asked 1261 U.S. adult fast-food customers which meal (breakfast, lunch, dinner, snack) they ordered. Is the variable qualitative or quantitative?

• quantitative (discrete)

• qualitative (continuous)

• qualitative

Which of the following variables is categorical? Check all that apply.

• Political Affiliation

• Age of incoming Grade 11 students

• Music preference

• Favorite subject

You are conducting a survey of the people of the United States to find out how popular the contact sports are. You randomly choose people to call and make 1,000 phone calls to people scattered across the country. In this study, what is the statistics term for THE PEOPLE IN THE U.S., and what is the statistics term for THE PEOPLE YOU CALLED?

• Both the people of the U.S. and the people you called are POPULATIONS.

• The people of the U.S. are the POPULATION, and the people you called are the SAMPLE.

• The people of the U.S. are the SAMPLE, and the people you called are the POPULATION.

• Both the people of the U.S. and the people you called are SAMPLES.