Stats Sampling

In the classroom, students are seated at tables. The teacher selects one table at random and samples all of the students at that table.

• Systematic

• Voluntary

• Cluster

• Convenience

• Simple Random Sample

From a class of 25 students the teacher selects the last 5 that enter the room.

• Cluster

• Voluntary

• simple random sample

• stratified

• convenience

A professor numbers his students from 1 to 200, places those numbers in a hat, mixes thoroughly and chooses 6 numbers without looking.

• Simple Random Sample

• voluntary

• systematic

• convenience

• cluster

To determine if average home prices differs among geographic regions, researchers use current real estate listings to randomly choose 500 homes for sale from each time zone.

• systematic

• stratified

• voluntary

• cluster

• convenience

After the guests have departed, a hotel sends an email to each guest with a link to an online survey in order to gather information about the guest satisfaction.

• convenience

• systematic

• voluntary

• simple random sample

• cluster

From a group of 100 employees, the manager randomly selects 12 of the 60 women and 8 of the 40 men to form a sample of 20.

• systematic

• stratified

• simple random sample

• cluster

• voluntary

A librarian obtains a spreadsheet of all books currently on the library inventory. Using the spreadsheet row numbers, he uses a random number table to obtain a sample of 500 books to determine the average age of teh library's collection of books.

• voluntary

• convenience

• simple random sample

• cluster

• stratified

A state auditor is given an assignment to choose and audit 26 companies. She lists all companies whose name begins with A, assigns each a number, and uses a random number table to pick one of these numbers and thus one company. She proceeds to use the same procedure for each letter of the alphabet and then combines the 26 results into a group for auditing.

• cluster

• systematic

• convenience

• stratified

• simple random sample

A high school principal decides to conduct a survey of the senior class by selecting five English 12 classes and interviewing each student in that class.

• cluster

• voluntary

• convenience

• systematic

• stratified

A survey on student study habits was handed out to the first 100 students to enter the cafeteria at lunch

• voluntary

• simple random sample

• stratified

• convenience

• cluster