Representative Samples

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year

• to randomly choose some 7th grade students to select a location

• to ask all 7th grade teachers and administrators for a location

• to ask the student council to choose a location

All students' names have been placed in a bowl. To determine what the favorite subject is of JDMS students, Mrs. Brantley draws out 100 names and asks those students what their favorite subject is. Is this representative or biased?

• Representative Sample

• Biased Sample

Middle school students are chosen at random to determine the average shoe size of middle school students.

• Representative Sample

• Biased Sample

Lester bought 2 eggs from each farmer at hte farmers' market. Each farmer had an equal number of eggs. Is this representative or biased?

• Representative Sample

• Biased Sample

A school principal wants to see which subject the 695 students in his school liked best. Which choice BEST represents a representative sample?

• The girls in the school.

• 1 classroom for each grade

• All the students in the school.

• The students making a B in math.

Mrs. Taylor wants to know the favorite sport of all 7th grade students. Which would be the best method for obtaining the most representative sample?

• Every other girl in her 3rd period

• Every other person in her 3rd period

• Every 3rd person that walks in her classroom each class period

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students

• 200 students 

• 320 students

• 8,000 students

Q1. How many red shirts are there?

• A) 5 red shirts

• B) 17 red shirts

• C) 40 red shirts

• D) 83 red shirts

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders

_______ is a part of a group being surveyed.

• Sample

• Population

• Random Sample

• Quartile