8.7 - Lesson Check 1.1

Parameter or Statistic?

A local journal conducted a survey. Of the 1800 subscribers, 1354 responded. Based on the survey, the journal concludes that 75% of subscribers will renew their subscriptions next year.

• Parameter

• Statistic

Population or Sample?

The average weight of every person entering the mall within 3 hour period was 146 lb.

• Population

• Sample

What would be the sample in this example?

Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors

• all shoppers in the mall

• the shoppers who were asked their preferences

Identify the population and parameter:

To determine the food preferences of their customers, the owners of a restaurant randomly choose 20 customers on Friday to participate in a survey.

• population: the 20 randomly chosen customers surveyed

  parameter: food preferences for the 20 randomly chosen customers

• population: all customers of the restaurant

  parameter: food preferences for all of the restaurant's customers

• population: all people in the nation

  parameter: food preferences for the 20 randomly chosen customers

• none of these

Tell if the statement is a Parameter or a Statistic

A recent survey by alumni of a major university indicated that the average salary of 10,000 of its 300,000 graduates was $125,000 a year.

• Parameter

• Statistic

Indicate whether the following refer to statistics or parameters.

The average height of all dogs in New York City

• Statistic

• Parameter

Before a nationwide election, a polling company was trying to predict who would win. Which choice is the most representative sample they could take?

• A selection of voters over age 50.

• A selection of male voters.

• A selection of voters of different ages.

• All voters.

There are 17,246,372 high school students in the U.S. In a study of 8505 U.S. high school students 16 years of age or older, 44.5% of them said they texted while driving at least once in the past 30 days. Which of the following represents the sample?

• the 17,246,372 high school students in the U.S.

• the 8505 U.S. high school students 16 years of age or older

• the 44.5% who said they texted while driving

• the past 30 days

Determine whether the data set is a population of a sample:

The amount of energy collected from every wind turbine on a wind farm.

• Population

• Sample

A poll about favorite sports is taken from 100 seniors in a high school where the senior class has 575 students. 23% of respondents said that baseball was their favorite sport.
The "100" is the ______

• Sample Size
• Population Size
• Statistic
• Parameter