Sampling Techniques Review

A sample consists of every 49th student from a group of 496 students.

• Random

• Convenience

• Stratified

• Cluster

• Systematic

Mrs. Trahan samples her class by picking 10 numbers from her hat and each number is assigned to a student. This is ______________ random sampling.

• Systematic

• Simple

• Stratified

• Cluster

49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively.

• Random

• Convenience

• Stratified

• Cluster

• Systematic

A pollster uses a computer to generate 500 random numbers, then interviews the voters corresponding to those numbers.

• Random

• Convenience

• Stratified

• Cluster

• Systematic

Which sampling technique allows Lyra to group students based on race and randomly select students to create a representative sample of the school?

• Simple random sampling

• Stratified random sampling

• Cluster sampling

• Systematic sampling

Match the following:

• Judgement Sample

• A sample in

  which every group of a given size has an equal

  chance of being chosen.

• Simple Random Sample (SRS)

• Involves the division of a

  population into smaller groups.

  Ideally, there is heterogeneity within each

  group. Data are collected

  from all observations in the selected group.

• Stratified Random Sample

• The

  division of a population into separate groups based on shared attributes or

  characteristics (homogeneous grouping).

  A simple random sample is

  selected within each group, and the selected units are combined

  to form the sample.

• Cluster Random Sample

• A method in which sample members from a population are selected according to a random starting point and a fixed, periodic interval.

• Systematic Random Sample

• A non-probability sampling technique where the researcher selects units to be sampled based on their own existing knowledge.

Sampling Technique: A toy manufacturer selects every 4^th toy to inspect on a production line to test for defects.

• Stratified

• Cluster

• Systematic

• Convenience

A poll on effective educational methods is taken by selecting 4 of the 10 departments at a local university and surveying all members in those groups.

• Systematic

• Stratified

• Cluster

• Convenience

To avoid working late, a quality control analyst simply inspects the first 100 items produced in a day.

• Random

• Convenience

• Stratified

• Cluster

• Systematic

An education researcher randomly selects 48 middle schools and interviews all the teachers at each school.

• Random

• Convenience

• Stratified

• Cluster

• Systematic