sampling variation

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• sampling error

  Sampling error is the variation that occurs from sample to sample due to the fact that no sample is a perfect representation of the population; can be biased or unbiased; also known as sampling variation.

• sampling

  Sampling is the process by which we choose which objects to study.

• leftover variation

  Leftover variation is variation in an outcome variable that remains after having accounted for variation due to at least one explanatory variable.

• explained variation

  Explained variation is the portion of the total variation we were able to attribute to a variable.

• unexplained variation

  Unexplained variation is everything included in the "other stuff" part of a word equation.