Sampling-Statistical Studies

Identify each of the following as an observational study or an experiment.

Compare the grades on a final math test of 25 students who use calculators and 25 students who do not use calculators. The students decide which group they are in.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

Identify each of the following as an observational study or an experiment.

Compare voter satisfaction levels between people assigned to use either paper ballots or touch‐ screen machines.

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

Identify each of the following as an observational study or an experiment.

Determine if people who take vitamin C every day are less likely to get colds.

• Observational study

• Experiment

Tags

CCSS.HSS.IC.B.3

Identify each of the following as an observational study or an experiment.

Determine which brands of orange juice people prefer. The people are randomly chosen at the supermarket and are asked to taste both brands without knowing which brand they are drinking.

• Experimental

• Observational Study

Tags

CCSS.HSS.IC.B.3

For each situation, choose the most appropriate technique for collecting data. Use the technique exactly once.

Estimate the number of students in your school who play video games more than 10 hours per week.

• Census

• Sample Survey

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

For each situation, choose the most appropriate technique for collecting data. Use the technique exactly once.

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

• Census

• Sample Study

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

For each situation, choose the most appropriate technique for collecting data. Use the technique exactly once.

Compare average class size for math classes and English classes in your high school.

• Census

• Sample Study

• Observational Study

• Experiment

Tags

CCSS.HSS.IC.B.3

Interview every 10th student who enters the school in the morning.

• simple random

• voluntary response

• systematic

• convenience

Tags

CCSS.HSS.IC.B.3

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• Self - selected (volunteer)

Tags

CCSS.HSS.IC.B.3

Political webpages often allow readers to rate (if they want to) whether they strongly agree, agree, disagree, or strongly disagree with the President's decision on any given situation. This is a form of:

• Self-Selected

• Convenience Sampling

• Simple Random Sampling

• Systematic Random Sampling

Tags

CCSS.HSS.IC.B.3