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identify the type of sampling used: Random, systematic, convenience, stratified, or cluster. To estimate the percentage of defects in a recent manufacturing batch, a quality control manager at Sony selects every th music CD that comes off the assembly line starting with the seventh until she obtains a sample of music CDs

Respuesta :

Systematic sampling is used.

What is systematic sampling?


  • Systematic sampling is a type of probability sampling method in which sample members from a larger population are selected according to a random starting point but with a fixed, periodic interval. This interval, called the sampling interval, is calculated by dividing the population size by the desired sample size.
  • Use systematic sampling when there's low risk of data manipulation. Systematic sampling is the preferred method over simple random sampling when a study maintains a low risk of data manipulation.

What is systematic sampling selection process?

First, calculate and fix the sampling interval. (The number of elements in the population divided by the number of elements needed for the sample.) Choose a random starting point between 1 and the sampling interval. Lastly, repeat the sampling interval to choose subsequent elements.

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