Identifying population & sample, parameter & statistic

Is the following a parameter or a statistic?

As of August 2021, 54% of the governors of the 50 states in the US are Republicans.

• parameter

• statistic

Tags

CCSS.HSS.IC.A.1

Is the following a parameter or a statistic?

In a survey of a sample of computer users, 8% said their computer had a malfunction that needed to be repaired by a service technician.

• parameter

• statistic

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

A mayor wanted to see if the people in the town thought they were doing a good job.

Match each to its correct label of: Statistic, Sample, Parameter, Population

• Statistic

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

• Population

• All townspeople.

• Sample

• A random selection of 100 townspeople.

• Parameter

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

A musician wanted to see what people who bought their last album thought about the songs. Which choice is the most representative sample they could take?

• Every person who bought the album.

• A selection of people who didn't want to buy the album.

• 250 girls who bought the album

• A random selection of 3,294 people who bought the album.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

The manager of a shopping mall distributed a customer-satisfaction survey by handing it to people as they came through one of the doors to the mall one day. Of those handed out, 215 were completed and returned. Should the results of the survey be generalized to the population of all customers of the shopping mall?

• Yes, because the sample size is large.

• Yes, because only people entering the mall were given the survey.

• Yes, because the sample was representative.

• No, because a random sample from all customers of the shopping mall was not selected.

• No, because not all customers were selected.

Matt wants to investigate the opinions of young adults in the country, ages 18 years to 25 years, about time spent playing video games. He plans to administer a survey to a sample of people. Which of the following samples is most likely to generalize to his population of interest?

• A nationwide sample of people ages 18 to 25

• A sample of attendees of a gaming convention

• A sample of people ages 18 to 25 in Matt’s hometown

• A sample of people who click on a link in an online gaming site

• A sample of people who buy video games from an online store

An ​ (a)   does not have treatments imposed.

An ​ (b)   has treatments imposed.

• Observational Study
• Experiment

Occurs when certain responses are

systematically favored over others.