Sample Methods

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

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

The school board wants to decide if they should more money be put into athletic programs or music programs at school. They survey the students in the band program. Is this survey biased or unbiased?

• Biased

• Unbiased

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

You want to find out people's favorite soft drink. You randomly pick names out of a telephone book and Ask: "What is your favorite soft drink?" Is this survey biased or unbiased?

• Biased

• Unbiased

A population is divided into homogeneous groups, then individuals are pulled from each group to survey. What kind of sample does this describe?

• simple random sample

• systematic random sample

• stratified random sample

• convenience sample

When you survey people who are easy to find and survey, what kind of sample is this?

• convenience sample

• cluster sample

• simple random sample

• stratified random sample

I conduct a survey by asking every third person who enters Publix what they think. This method is:

• Random

• Convenience

• Systematic

• Stratified

Tags

CCSS.HSS.IC.B.3

I conduct a survey by splitting the school by grade, then asking 100 Freshmen, 100 Sophomores, 100 Juniors, and 100 Seniors.  Is this method:

• Clustered
• Self-Selected
• Random
• Stratified

Tags

CCSS.HSS.IC.B.3

Name that sample!

Method A: Randomly choose 8 players from each of the Major League Soccer teams.

Method B: Randomly choosing players from 1 of the Major League Soccer teams.

Method C: Choosing every other player on the Major League Soccer Roster.

• Stratified, Cluster, Systematic

• Cluster, Stratified, Systematic

• Stratified, Simple Random, Cluster

• All are Simple Random

Tags

CCSS.HSS.IC.B.3

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.

This is a form of:

• Simple Random Sampling

• Convenience Random Sampling

• Cluster Random Sampling

• Systematic Random Sampling

Group businesses according to type: medical, retail, restaurant, hotel, other. Then select a random sample of 10 businesses from each type.

• cluster

• convenience

• stratified

• systematic