AP Stats Parameter vs Statistic

When interpreting the confidence interval, make sure that you are describing the 

• statistic

• parameter

A __________ gives an interval of plausible values for the _____________. 

• confidence interval, statistic

• point estimate, parameter

• point estimate, statistic

• confidence interval, parameter

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

• parameter

• statistic

In a survey of a sample of high school students, 43% said that their mother has taught them the most about managing money.

• parameter

• statistic

In a recent survey of 1503 adults in the United States, 53% said they use both a landline and a cell phone,

• parameter

• statistic

In  a recent year, the average math scores for all graduates on the ACT was 21.1.

• parameter

• statistic

Which choice best represents a statistic?

• The percentage of all townspeople who believe the mayor is doing a good job.

• The percentage of townspeople surveyed who believe the mayor is doing a good job.

• All townspeople.

• A random selection of 100 townspeople.

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. 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