Sampling and bias

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

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

To find out what sort of events they should plan, the student government officers at Truth send a survey to 30 students whose names were randomly selected. The sample is...

• The 30 students who were sent the survey

• All students at Truth

• The student government officers

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Why should samples be randomly selected?

• for control

• to reduce bias

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

Tags

CCSS.HSS.IC.B.3

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

Tags

CCSS.HSS.IC.B.3

To get valid results, a sample must be...

• biased

• unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Which would be a good Unbiased group?

• every third student entering the building

• every member of the varsity football team

• every member in Ms. Zimmer’s drama classes

• every student having a second-period French class

Tags

CCSS.RL.11-12.6

A survey is being conducted to determine if a cable company should add another sports channel to their schedule. Which random survey would be the least biased?

• surveying 30 men at a gym

• surveying 45 people at a mall

• surveying 50 fans at a football game

• surveying 20 members of a high school soccer team

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Erica is conducting a survey about the proposed increase in the sports budget in the Hometown School District. Which survey method would likely contain the most bias?

• Erica asks every third person entering the Hometown Grocery Store

• Erica asks every third person leaving the Hometown Shopping Mall this weekend.

• Erica asks every fifth student entering Hometown High School on Monday morning.

• Erica asks every fifth person leaving Saturday’s Hometown High School football game.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1