Appropriate Method for Gathering Data

Which sample can best help him to draw conclusions about the preferences of all the students in the school?

• 50 tenth graders, 50 eleventh graders, 50 twelfth graders

• 43 tenth graders, 55 eleventh graders, 47 twelfth graders

• 55 tenth graders, 43 eleventh graders, 47 twelfth graders

• 47 tenth graders, 55 eleventh graders, 43 twelfth graders

Why is the sample you chose in the previous question the most appropriate method? Select all that apply.

• This sample is the easiest method for gathering data.

• This sample requires the most amount of people.

• This sample represents the whole population.

• This sample is proportional to the whole population.

• This sample is the most random.

A Statistics student did a research on the time spent by Grade 12 students playing video game. He selected the subjects by using the Table of Random Numbers. What technique is used?

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

• Cluster Random Sampling

Answer the question pictured.

• 4 students in the hallway

• All students in the marching band

• 50 12th graders at random

• 100 students at random during lunch

Match the following sampling methods with the scenerios

• Simple Random Sample

• principal places all teachers into a spreadsheet.  Then selects every 7^th teacher.

• Systematic Sample

• principal places all teachers into a spreadsheet and uses a number generator to pick 10 teachers.

• Stratified Sample

• principal divides the teachers into 6 different groups and chooses 2 teachers from each group.

• Convenience Sample

• principal divides the teachers into 8 groups and chooses 2 of the groups at random.   He gives all teachers in the 2 groups a survey.

• Cluster Sample

• principal surveys only the teachers the he sees walking into the café door.

• Representative Sample

• Voluntary Sample

• Convenience Sample

• Random Sample

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• Simple random

• Voluntary

• Convenience

• Systematic