1.6 Observational Study or Experiment

One group of subjects was given an herbal supplement and another group was given a placebo. After one year, the number of illnesses each group had was compared.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

One group of subjects was given an herbal supplement and another group was given a placebo. After one year, the number of illnesses each group had was compared. What is the explanatory variable?

• herbal supplement/placebo

• number of illnesses

Tags

CCSS.HSS.IC.B.5

One group of subjects was given an herbal supplement and another group was given a placebo. After one year, the number of illnesses each group had was compared. What is the response variable?

• herbal supplement/placebo

• number of illnesses

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

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. What is the explanatory variable?

• car color

• wearing seatbelt or not

Tags

CCSS.HSS.IC.B.3

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. What is the response variable?

• car color

• wearing seatbelt or not

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

A professor finds that people who are obese have higher cholesterol levels than those who are not obese. What is the explanatory variable?

• obesity

• cholesterol levels

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.9

A professor finds that people who are obese have higher cholesterol levels than those who are not obese. What is the response variable?

• obesity

• cholesterol levels

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

CCSS.HSS.ID.A.2