Parameters Statistics

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. What is the STATISTIC (x̄: sample mean)?

• 42 minutes

• 300 randomly selected AACPS students

• All AACPS students

• The average amount of time that all AACPS students spend doing math homework

What word best describes this definition: a numerical value that describes the population. Mean or average from the population, denoted µ (mu).

• Population

• Sample

• Parameter

• Statistic

What word best describes this definition: a numerical value that is calculated from a sample. Mean or average from the sample, denoted x̄ (x-bar).

• Population

• Sample

• Parameter

• Statistic

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. Who is the SAMPLE?

• 42 minutes

• 300 randomly selected AACPS students

• All AACPS students

• The average amount of time that all AACPS students spend doing math homework

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. Who is the POPULATION?

• 42 minutes

• 300 randomly selected AACPS students

• All AACPS students

• The average amount of time that all AACPS students spend doing math homework

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. What is the PARAMETER (μ: population mean)?

• 42 minutes

• 300 randomly selected AACPS students

• All AACPS students

• The average amount of time that all AACPS students spend doing math homework

The average annual salary for 35 of a company's 1200 accountants is $68,000. The "$68,000" is a...

• parameter

• statistic

You want to know the average height of seventh-graders in Tallahassee. Would it be a better idea to survey the population or a sample?

• Survey the population

• Survey a sample

A random sample of 1003 Mercy County voters is asked if they would vote for the incumbent governor. The percent of voters responding "yes" is calculated. What is the population parameter?

• percentage of 1003 voters that would vote yes for the incumbent governor

• percentage of all voters in Mercy County that would vote yes for the incumbent governor

• percentage of all voters that voted yes for the mayor

• percentage of all voters that voted yes in the last election

What do you call a number that describes a measure of a population?

• sample statistic

• parameter

• variable

• distribution