For a school project, three students need to produce a sample of students at their school. Which of the following methods leads to a random sample?

• Numbering all the students and produce the sample from a random list of numbers

• Calling for volunteers at the school assembly

• Calling for volunteers via social media

• Asking each of their friends to name three further friend2

An elementary school principal wants to evaluate the teaching quality of the school by collecting data from a sample of students. Which of the following is not a suitable stratum to be used to collect the sample?

• gender

• grade level

• race

• first name

At a local golf club, there are 50 male members and 30 female members. A representative sample of 10 random male members and 6 random female members is chosen. Which of the following is the sampling method used?

• simple random sampling

• systematic random sampling

• stratified sampling

To find out what sort of events they should plan, the student government officers at OVHS send a survey to 40 students, 10 in each grade, whose names were randomly selected. The population they are interested in is...

• only the 30 OVHS students

• all students at OVHS

• only students who respond to the survey

• all high school students in HB

involves simply asking anyone who happens to be there if they would like to participate.  For instance, asking students in the library if they would be willing to complete a survey.

• random sampling

• convenience sampling

• volunteer sampling

• snowball sampling

Which of the following is an example of categorical data?

• Height

• Number of Credits Earned

• Grade in School

• Grade Point Average

Which of the following is an example of a quantitative variable?

• Supervising Manager

• Hours Worked

• Pay Scale Group

• Certification

Which of the following is a categorical variable?

• Flight Length

• Flight Number

• Number of Passengers

• Fuel Consumption

Which of the following is an example of a quantitative variable?

• Studio of Oscar Winners

• Academy Association Membership Number

• Film Genre

• Age of Oscar Winner

The number of miles Jenna ran each week is shown:

28, 31, 36, 36, 42, 48, 52

What is the median number of miles Jenna ran?

• 24

• 39

• 36