nayreh360 nayreh360
  • 02-11-2017
  • Mathematics
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What is the difference between the sample average y and the population​ mean?

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altavistard
altavistard altavistard
  • 02-11-2017
When a finite number of samples are drawn from a larger population, the sample mean of that sample, while usually close to the population mean, is not the same thing.  A population mean, on the other hand, is a description of pretty much ALL of whatever is being examined.

Example of population:  Everyone in the USA
Example of a sample:    One person, chosen at random, from each of the 50 states


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