Sampling Techniques Sampling Size

Ohio Department of Education has classified districts into 8 typology codes based on shared demographic and geographic characteristics. 5 districts from each topology code are selected. This is an example of (blank) sampling.

• Simple random

• Systematic

• Stratified

• Cluster

• Multistage

Answer explanation

Stratified sampling splits the population into strata and a sample is chosen from each stratum. Here the strata are the 8 typology codes.

Divide a population into groups and select a random sample of each group. What sampling technique is this?

• Stratified

• Systematic

• Cluster

• Convenience

• Random Sample

If every 17th customer leaving a coffee shop is surveyed, this would be an example of systematic sampling.

• True

• False

If the elements of a population are numbered sequentially and then each person is selected by random number, this would be an example of a random sample.

• True

• False

Every possible sample of the same size has the same chance of being selected. What sampling technique is this?

• Stratified

• Systematic

• Cluster

• Convenience

• Random Sample

Choose a starting value at random. Then choose every kth member of the population. What sampling technique is this?

• Stratified

• Systematic

• Cluster

• Convenience

• Random Sample

A statistician selected every fifteenth member of a population for a sample. What sampling technique is this?

• Stratified

• Systematic

• Cluster

• Convenience

• Random Sample

Mr. Mitchell wants to do a survey on how many juniors at school use a cell phone to complete digital homework assignments. There are 278 juniors at school, using student ID#s they select 50 numbers at random. What sampling technique is this?

• Stratified

• Systematic

• Cluster

• Convenience

• Random Sample

Mr. Mitchell wants to do a survey on how many juniors at school use a cell phone to complete digital homework assignments. There are 278 juniors at school, using student ID#s they pick every 10th student for the survey. What sampling technique is this?

• Stratified

• Systematic

• Cluster

• Convenience

• Random Sample