Statistical Questions and Variables IP

Which of the following are considered quantitative variables? (Choose all that apply).

• Average driving speed

• Type of car you own

• Month of your birthday

• Your age

A veterinarian polled her clients who own dogs as to whether or not they used dry food only for their dogs. Which of the following describes the population of this survey?

• pet owners

• dog owners

• this veterinarian's clients

• this veterinarian's dog-owning clients

Is this a statistical question?

"What is the tallest building in Chicago, IL?"

• YES

• NO

Is this a statistical question?

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

• YES

• NO

Is this a parameter or statistic?

"The average length of all trout in a river is 60 cm."

• Parameter

• Statistic

For the survey question below, is the variable quantitative or categorical?

"What is your eye color?"

• Quantitative

• Categorical

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.

If the Hamilton High School freshman class is the sample in a statistical study, which is NOT a possible population for the study?

• the student body of Hamilton High school

• the students in Hamilton High School's district

• The students in Ms. Anderson's science class

• All freshman students in the state

Which of the following represent categorical variables?

• Number of hours you play sports per week

• Type of job you have

• Sport you play

• Amount of money you make working a job each week