AQR Unit 5_Statistical Studies Review_ROSS

To test the effects of eating breakfast on test grades. I randomly select half of my students and feed them breakfast while giving the other half nothing to eat. I then give them all a test and compare the test grades of each group.

Is this an experiment or an observational study?

• Experiment

• Observational study

• Neither

• Both experiment and observational study.

Tags

CCSS.HSS.IC.B.3

A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym. Is this sample biased or unbiased?

• Biased

• Unbiased

• Not able to be determined.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A researcher stood at a school parking lot entrance to see if the color of a car is related to the driver not wearing a seat belt.

Which research method is most appropriate?

• Observational Study

• Experiment

• Census

• Correlation

Tags

CCSS.HSS.IC.B.3

The research cycle is continuous.

• True
• False

Statistical investigations are used every day for a variety of reasons.

• False
• True

Tags

CCSS.HSS.IC.B.3

Conducting an experiment is an example of collecting

• primary data
• secondary data

Tags

CCSS.HSS.IC.B.3

Conducting a survey is an example of collecting

• primary data
• secondary data

Looking something up on the internet or in a book for a reasearch project is an example of collecting

• primary data
• secondary data

Margin of error is a measure of how much the researcher messed up.

• True
• False

Tags

CCSS.HSS.IC.B.4

A margin of error is a value that describes how far below or above the mean average you can expect the results to be.

• True
• False

Tags

CCSS.HSS.IC.B.4