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

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

Sampling method based upon LOCATION and you randomly pick a location and sample all there

• Stratified Sampling
• Simple Random Sampling (SRS)
• Cluster Sampling
• Systematic Sampling

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

Sampling method in which you select SUCCESSIVELY smaller groups within the population and SRS is used each time

• Stratified Sampling
• Multistage (Sequential) Sampling
• Cluster Sampling
• Systematic Sampling

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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 Random Sampling
• Simple Random Sampling
• Volunteer response

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

Units of the population are grouped; one or more groups are selected at random.  All units of that group are included in the sample.

• cluster sample
• simple random
• stratified
• proportional

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

A sample in which every member of the population has equal chance of being selected

• Stratified Random Sample
• Convenience Sample
• Simple Random Sample
• Systematic Sample

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

Can pleasant aromas help a student learn better? Two researchers believed that the presence of a floral scent could improve a person's learning ability in certain situations. They had 22 people work through a pencil-and-paper maze 6 times. Three of the times they wore a floral-scented mask and three times they wore an unscented mask. The three trials for each mask followed one another. Testers measures the length of time it took subjects to complete each of the six trials. They reported that, on average, subjects wearing the floral-scented mask completed the maze more quickly that those wearing the unscented mask, although, the difference was not statistically significant. This study is:

• a convenience sample
• an oberservational study
• an experiment, but not double-blind
• a double-blind experiment

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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

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

Choosing people at random at the supermarket and asking them to taste two brands of orange juice to determine which brand they prefer.

• Census
• Sample Survey
• Experiment
• Observational Study

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

Convenience sample and voluntary response sample are types of...

• biased samples

• unbiased samples

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