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You want to collect data on a random sample of products created on a production line. The company has
two types of products (A and B). For each of the scenarios described below, please name the sampling
method.
A. You randomly select the serial numbers of 50 products and collect information on each item selected.
B. You randomly select 20 products of type A and 20 products of type B.
c. You select every 20th product as they come off the production line.

Respuesta :

Using sampling classifications, it is found that:

  • a) Cluster sampling.
  • b) Stratified sampling.
  • c) Systematic sampling.

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Samples are classified as:

  • Convenient: Sample drawn from a conveniently available pool.
  • Random: Basically, put all the options into a hat and drawn some of them.
  • Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
  • Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
  • Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

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Item a:

  • Products chosen, and then each is used. Thus, cluster sampling.

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Item b:

  • A number of elements from each group, not all, thus, stratified sampling.

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Item c:

  • Every kth element, in this case, every 20th, thus systematic sampling.

A similar question is given at https://brainly.com/question/24188753

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