Statistical Survey

A sample should be

• representative of  only middle school students only

• a very large group

• representative of the population

• representative of people who volunteer

According to a random telephone survey of 200 adults, 75% of all working adults in the U.S. are satisfied with their current job. What is the population in this survey?

• 200 adults

• adults in the U.S.

• 75% of adults

Chosen at random, 580 customers at a car dealership are contacted and asked their opinions of the service they received.
This is what type of sample?

• convenience

• stratified

• simple random sample

• cluster

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys, so she randomly selects five students from the class to survey, paying no attention to their gender.
This is a form of:

• Cluster Sampling

• Systematic Sampling

• Stratified Sampling

• Simple Random Sampling

A poll about favorite sports is taken from 100 seniors in a high school where the senior class has 575 students. 23% of respondents said that baseball was their favorite sport.
The "100" is the ______

• Sample Size

• Population Size

• Statistic

• Parameter

A poll about favorite sports is taken from 100 seniors in a high school where the senior class has 575 students. 23% of respondents said that baseball was their favorite sport.
The "575" is the ______

• Sample Size

• Population Size

• Statistic

• Parameter

This is what type of sample?

• cluster

• convenience

• systematic

• stratified

Is this a statistical question?

"What is the most popular store among teenagers in the Turtlecreek Mall?"

• YES

• NO

Which of the following are parameters? Select all that apply.

• 75% of the students at North High School voted for Lucy

• The total collected at a fundraiser was $5, 281

• The mean height of students at one table in the cafeteria is 1.3 m.

• Ten out of 25 random people surveyed chose "red."

Which of the following represent a statistic? Choose all that apply.

• A biology teacher finds that 56% of students preferred labs to tests when polling 25 randomly selected students.

• A teacher surveys all of his students and finds that 87% enjoy group work.

• Forty randomly selected members of a high school music program were asked to report the number of hours they spend practicing each week.

• A company looks at all of the bags of almonds they produced in a year and finds that the average number of almonds per bag was 18.