Statistical Questions, Observational Study, Experiment, Population

A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?

• All teachers in the world.

• All teachers within the school.

• All mathematics  teachers in the school.

• All teachers except mathematics teachers.

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

The entire group studied.

• sample

• population

A survey of 976 American households found that 32% of the households own two cars.  Identify the the population. {hint: which group was targeted... used for the survey}

• All American households

• 976 American households

• 32% of Americans own two cars

• two cars

Is this a statistical question: How many apps do my classmates have on their phones?

• Yes 

• No

A question that anticipates and accounts for a variety of answers is called a/an

• nonstatistical question

• statistical question

• variable

• histogram

What is the main purpose for asking statistical questions?

• Surveying people is fun.

• We can create charts with statistics.

• Statistical questions help us gather data about a topic.

Population or Sample?

A factory overseer selects 40 threaded rods at random from those produced that week at the factory, then she tests their tensile strength.

• Population

• Sample

Is the following question statistical or non statistical?
On average, how many water bottles does every class go through daily?

• Statistical

• Non Statistical

Is this a statistical question: How many pairs of shoes do you have?

• No

• Yes