Experimental Design and Sampling Unit Review

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

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

A placebo is...

• an inactive "look-alike" meant to seem real
• a rare type of African bird indigenous to the foothills of Morocco
• Something used to hunt with
• the change in symptoms as a result of an inactive "look-alike"

Tags

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RL.5.1

CCSS.RL.5.4

CCSS.RL.7.4

What is the placebo effect?

• Something that affects the neurological pathways causing people to do nonsensical things.

• When someone believes a medication works but the medication was not medicated.

• A dangerous experiment that can harm the person that is experimented.

• A disease that effects the brain, worse than meningitis

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

Identify the explanatory variable in this scenario: The weeds in my garden are 2 inches taller today after the heavy rain we received last night.

• Height of weeds

• Amount of rain

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 seatbelt.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

Identify the response variable in this scenario: A recent study compared the average number of hours of sleep each night each person reported as well as the number of cups of coffee they consumed that day.

• Hours of sleep

• Number of cups of coffee

In an experiment the ​ (a)   group gets the​ ​ (b)  

• control
• placebo
• population
• first

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

All sample surveys are observational studies

• TRUE

• FALSE

Tags

CCSS.HSS.IC.B.3

A professor finds that people who are obese have higher cholesterol levels than those who are not obese.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

To ensure that the experiment results are valid it is important that the experiment have...

• Replication

• Control Group

• Randomization of treatments

• All of the above

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5