8.22.3-Refine Ideas about Random Sampling

Multiple Choice

A ______ is the entire set of objects from which data might be collected

• sample

• population

• sample statistic

• population characteristic

Multiple Choice

A _______ is a subset or part of the population that you can collect data from.

• sample

• population

• sample statistic

• population characteristic

Multiple Choice

True or False:

All samples lead to a good prediction about the entire population.

• True

• False

Multiple Choice

A student wants to know which type of of pizza middle school students prefer. Which of the following options is a good, representative sample of the population?

• Asking all of the 5th graders

• Asking 20 students from each grade level in the middle school

• Asking all of the teachers

• Asking the students who walk to school each day

Multiple Choice

A beverage company wants to see if people in the United States like their new logo. Which of the following represents the population?

• 2,000 middle school students

• A selection of logo designers

• A selection of shoppers from different states

• All of the people in the United States

Multiple Choice

A beverage company wants to see if people in the United States like their new logo. Which of the following would be the best selection for a sample.

• 2,000 middle school students

• A selection of logo designers

• A selection of shoppers from different states

• All of the people in the United States

Multiple Choice

You want to study a random sample of 4 out of 26 students in your class. Describe a process you could use to create a random sample with 4 subjects.

• Assign each student a number in alphabetical​ order, then select 4 random numbers.

• Select 4 students who sit close to you.

• Select the 4 students whose names come first alphabetically.

• Assign each student a​ number, then select students 1 through 4.

Multiple Choice

To learn about teenagers' opinions of different social media platforms, a survey was given to students of one high school. This sample is...

• representative

• biased

• random

Multiple Choice

An employer wants to know how their 500 employees like working for them. Which is the most representative sample?

• Ask the first 75 people to show up for work

• Randomly select the names of 10 employees

• Poll the Employees of the Month for the past year

• Randomly select the names of 75 employees

Multiple Choice

Which is an example of a random sample?

• Polling the first 10 people who enter a room

• Asking a survey question to people who call in

• Drawing 10 names from a hat

Multiple Choice

Why should samples be randomly selected?

• for control

• to reduce bias

• so we don't get the same answers from everyone

Multiple Choice

A _______ is a part of a the group we are interested in gathering data on that is being surveyed.

• Representative

• Population

• Sample

Multiple Choice

A _________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Bias