Stratified Systemic Convenience Cluster Simple Random Sample

Farmer Joe randomly picks 100 trees using a random number generator to estimate the number of apples produced by his apple trees.  This is ______________ sampling.

• Simple

• Stratified

• Cluster

• Systematic

Farmer Joe separates his farm into 10 regions.  He then randomly selected 5 trees from each region to estimate the number of apples produced on his apple tree farm.  This is _____________ sampling.  

• Cluster

• Systematic

• Stratified

• Simple

To study the amount of time students spend doing homework each day, use a random number generator to select 25 students from the student enrollment database to survey.

• Convenience Sample

• Simple Random Sample

• Stratified Random Sample

• Interval Sample

To study the amount of time students spend doing homework each day, use a random number generator to select 25 freshmen, 25 sophomores, 25 juniors, and 25 seniors to survey.

• Convenience Sample

• Simple Random Sample

• Stratified Random Sample

• Interval Sample

The school librarian wants to determine how many students use the library on a regular basis.  What type of sampling method would she use if she chose to select every 3rd student who enters the library on Tuesday.

• Convenience Sample only

• Simple Random Sample

• Stratified Random Sample

• Systematic Sample

The school librarian wants to determine how many students use the library on a regular basis.  What type of sampling method would she use if she chose to use a random number generator to randomly select 50 students from the school's attendance roster.

• Convenience Sample

• Simple Random Sample

• Stratified Random Sample

• Interval Sample

The school librarian wants to determine how many students use the library on a regular basis.  What type of sampling method would she use if she chose to randomly select 20 students in the cafeteria during each of the three lunch periods on Monday.

• Convenience Sample

• Simple Random Sample

• Stratified Random Sample

• Interval Sample

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

• Stratified.

• Systematic

• Cluster

• Biased.

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• Self - selected (volunteer)

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling