U9L2: Sampling Methods and Bias

A ___ is a large group that includes everything being studied.

• Sample
• Stratified Sampling Method
• Population
• Voluntary-Response

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A ___ is a small portion of the population used to gather data from.

• Systematic Sampling Method
• Sample
• Population
• Bias

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

• Convenience Sampling

• Systematic Random Sampling

• Simple Random Sampling

• Volunteer response

Tags

CCSS.HSS.IC.B.3

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample
• Stratified Random Sample
• Voluntary Response
• Systematic Random Sampling

Tags

CCSS.HSS.IC.B.3

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling

Tags

CCSS.HSS.IC.B.3

Political webpages often allow readers to rate (if they want to) whether they strongly agree, agree, disagree, or strongly disagree with the President's decision on any given situation. This is a form of:

• Self-Selected

• Convenience Sampling

• Simple Random Sampling

• Systematic Random Sampling

Tags

CCSS.HSS.IC.B.3

A teacher hands out an index card and asks ALL of her students to write down the following information: age, height (in inches), and what grade they are in.

Which of the following best describes her method of data collection?

• Census

• Simple Random Sample

• Cluster Random Sample

• Stratified Random Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• Self - selected (volunteer)

Tags

CCSS.HSS.IC.B.3

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

• Stratified.

• Systematic

• Cluster

• Biased.

Tags

CCSS.HSS.IC.B.3

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