CCSS.Math.Content.HSS.IC.B.5

What does it mean when a test is statistically significant?

• it has reached alpha level status
• the test statistic had a P-value higher than the alpha level
• the test statistic had a P-value lower than the alpha level
• it is important in practical terms

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CCSS.Math.Content.HSS.IC.B.5

The conductor has control over the environment in this setting

• experiment
• observational study
• population
• sample

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CCSS.Math.Content.HSS.IC.B.5

Assigning treatment groups by dividing participants into blocks of subjects with similar characteristics and then within each block you randomly assign subjects to treatment groups

• Randomized Block Design
• Matched Pairs Design
• Random Selection

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CCSS.Math.Content.HSS.IC.B.5

A situation that occurs when an experimenter cannot tell the difference between the effects of the different factors on a variable

• Hawthorne Effect
• Confounding Variable
• Placebo Effect

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CCSS.Math.Content.HSS.IC.B.5

A market research company wishes to find out whether the population of students at a university prefers Starbucks or Dunkin Donuts. A random sample of students is selected, and each student is asked first to try both but the order they try them is randomly decided with a coin toss (heads: Starbucks, then Dunkin. tails: vice versa). They then indicate which brand they prefer. This is an example of

• a completely randomized experiment
• an observational study
• a stratified sample
• a matched pairs experiment

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CCSS.Math.Content.HSS.IC.B.5

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.5

To investigate whether standing up while studying affects performance in an algebra class, a teacher assigns half of the 30 students in his class to stand up while studying and assigns the other half to not stand up while studying. Which of the following best describes this plan?

• This is an observational study

• This is an experiment

• This is a stratified random sample

• This is a cluster sample

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CCSS.Math.Content.HSS.IC.B.5

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

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CCSS.Math.Content.HSS.IC.B.5

Four groups of randomly selected people are assigned a different diet. After six months, the blood pressures of each group are compared.

• Observational Study

• Experiment

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CCSS.Math.Content.HSS.IC.B.5

Decide if computer games are more effective than paper and pencil drills for children learning the multiplication tables.

• Census

• Sample Survey

• Experiment

• Observational Study

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CCSS.Math.Content.HSS.IC.B.5