Prob/Stat Unit 1 Review

Determine whether the study is an observational study or an experiment. 
"A medical researcher obtains a sample of adults suffering from diabetes. She randomly assigns 67 people to a treatment group and 67 to a placebo group. The treatment group receives a medication over a period of three months and the placebo group receives a placebo over the same time frame. At the end of three months the patients' symptoms are evaluated. 

• Observational Study
• Experiment

Tags

CCSS.HSS.IC.B.3

Determine whether the study is an observational study or an experiment. 
"A pollster obtains a sample of students and asks them how they will vote on an upcoming referendum."

• Observational Study
• Experiment

Tags

CCSS.HSS.IC.B.3

Determine whether the study is an observational study or an experiment. 
"The personnel director at a large company would like to determine whether the company cafeteria is widely used by employees. She calls each employee and asks them whether they usually bring their own lunch, eat at the company cafeteria, or go out for lunch."

• Observational Study
• Experiment

Tags

CCSS.HSS.IC.B.3

Determine whether the study is an observational study or an experiment. 
"A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. After interviewing all 200 participants in the study, the researcher compared the rate of depression among the smokers with the rate of depression among the nonsmokers."

• Observational Study
• Experiment

Tags

CCSS.HSS.IC.B.3

Identify the sampling technique used.
"A researcher randomly selects and interviews 50 male and 50 female teachers."

• Random
• Systematic
• Stratified
• Cluster

Tags

CCSS.HSS.IC.B.3

Identify the sampling technique used. 
"A researcher for an airline interviews all of the passengers on five randomly selected flights."

• Convenience
• Systematic
• Stratified
• Cluster

Tags

CCSS.HSS.IC.B.3

Identify the sampling technique used. 
"A community college student interviews everyone in their statistics class to determine the percentage of students that own a car."

• Cluster
• Stratified
• Convenience
• Systematic

Tags

CCSS.HSS.IC.B.3

Identify the sampling technique used. 
"A lobbyist for a major airspace firm assigns a number to each legislator and then uses a computer to randomly generate ten numbers. The lobbyist contacts the legislators corresponding to these numbers."

• Stratified
• Random
• Cluster
• Convenience

Tags

CCSS.HSS.IC.B.3

Identify the sampling technique used. 
"To ensure customer satisfaction, every 5th phone call received by customer service will be monitored."

• Stratified
• Convenience
• Random
• Systematic

Tags

CCSS.HSS.IC.B.3

Identify the sampling technique used. 
"A market researcher randomly selects 100 drivers under 45 years of age and 200 drivers over 45 years of age."

• Random
• Stratified
• Systematic
• Cluster

Tags

CCSS.HSS.IC.B.3