Populations Samples Parameters

Is the following a parameter or a statistic?

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

• parameter

• statistic

A school principal wants to see which subject the 845 students in the school liked best.

Which choice best represents the parameter of interest?

• 700 of the 845 students prefer math.

• 100 of the 120 students surveyed prefer math.

• 845 students

• 120 students surveyed

Is the following a parameter or a 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

Before a nationwide election, a polling company is trying to predict who will win. Which choice is the best representation of a statistic they may obtain?

• A selection of voters over age 50.

• All voters.

• The percentage of voters in favor of the candidate.

• 53% of a selection of voters support the candidate.

You ask 75 randomly chosen students at a school how many movies they watch each week. If there are 1200 students in the school, estimate the number of students who watch one movie per week.

• 900

• 210

• 840

• 336

_______ is the entire group of objects or individuals considered for a survey.

• Sample

• Population

• Random Sample

• Quartile

A toy store owner tracking how much kids spend each month on toys. Which choice best represents a population?

• All of the kids who buy toys.

• 227 wealthy kids.

• 228 boys age 7 - 15

• 235 kids from age 10 to 15.

_______ is a part of a group being surveyed.

• Sample

• Population

• Random Sample

• Quartile

A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?

• All teachers in the world.

• All teachers within the school.

• All mathematics  teachers in the school.

• All teachers except mathematics teachers.