Sampling Technique

Mrs. Trahan samples her class by selecting every third person on her class list.  Which type of sampling method is this?

• Simple

• Systematic

• Stratified

• Cluster

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

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

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

• Stratified

• Cluster

• Systematic

• Convenience

Identify the sampling technique. A lobbyist for a major airspace firm assigns a number to each legislator and then uses a computer to randomly generate ten numbers. The lobbyist contacts the legislators corresponding to these numbers.

• random

• stratified

• systematic

• convenience

• cluster

Sampling Technique: 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

Match the following:

• Stratified Random Sample

• 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.

• Cluster 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.

• Systematic Random Sample

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

• Simple Random Sample (SRS)

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

• Judgement Sample

• A sample in

  which every group of a given size has an equal

  chance of being chosen.

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

Mrs. Trahan samples her class by selecting all students sitting at group 1 and group 5 in her classroom.  This sampling technique is called?

• Simple

• Stratified

• Systematic

• Cluster