CCSS.Math.Content.HSS.IC.B.3

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year
• to randomly choose some 7th grade students to select a location
• to ask all 7th grade teachers and administrators for a location
• to ask the student council to choose a location

Tags

CCSS.Math.Content.HSS.IC.A.1

CCSS.Math.Content.HSS.IC.B.3

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. 

• Convenience Sampling
• Systematic Sampling
• Random Sampling
• Volunteer response

Tags

CCSS.Math.Content.7.SP.A.1

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.HSS.IC.B.3

Why do we randomize in an experiment or a survey?

• Because we have to
• It helps reduce the effects of confounding variables
• It eliminates all possible confounding variables
• It makes sampling easier

Tags

CCSS.Math.Content.HSS.IC.B.3

Determining if students using a calculator on a math final exam score better than students who do not use a calculator 

• Cenus
• Sample Survey
• Experiment
• Observational Study

Tags

CCSS.Math.Content.HSS.IC.B.3

Asking customers at a restaurant if pizza should be added to the menu.

• Census
• Sample Survey
• Experiment
• Observational Study

Tags

CCSS.Math.Content.HSS.IC.B.3

6

• A

• B

• C

• D

• E

Tags

CCSS.Math.Content.HSS.IC.B.3

To determine whether sugar affects an athlete’s performance at practice, Coach Barron gave half the team doughnuts for breakfast and the other half whole grain cereal. He compared the two groups in terms of endurance and energy. This is an example of:

• Observational Study

• Experimental Study

Tags

CCSS.Math.Content.HSS.IC.B.3

A political polling group is interested in learning about the proportion of registered voters who favor a particular candidate for mayor. Which of the following sampling plans may have introduced bias?

• Individuals were selected randomly to participate from a list of registered voters.

• Every 50^th person on a list of registered voters was contacted and asked to identify who they would vote for in the upcoming election.

• A list of registered voters was first separated into two lists—one of males and one of females. Then individuals were selected at random from each of the two lists.

• A survey was mailed to all registered voters and those who returned the survey make up the sample

• None of the above sampling plans creates the potential for bias.

Tags

CCSS.Math.Content.HSS.IC.B.3

Which of the following doesn’t result in some form of bias?

• Choosing AP students to survey regarding their GPA in order to estimate the average GPA in a school.

• Polling a group of potential voters outside a Republican campaign office in order to estimate the proportion of city residents who favor a particular candidate.

• Surveying people who work in the marketing department of a large corporation in order to assess employee satisfaction with management policies.

• Choosing a stratified random sample of juniors and seniors at a high school in order to estimate the proportion of juniors and seniors who plan to go on to college.

• Asking shoppers leaving a grocery store if they think groceries should cost less in order to estimate the proportion of city residents who think groceries cost too much.

Tags

CCSS.Math.Content.HSS.IC.A.1

CCSS.Math.Content.HSS.IC.B.3

All of the following are elements of a good experimental design except

• A control treatment

• A random sample

• multiple treatments

• A single group of peopel

Tags

CCSS.Math.Content.HSS.IC.B.3