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5 Cards in this Set

  • Front
  • Back
what is a parameter?
is the # that describes the population
what is a statistic?
a # can be computerd from your sample

z s s^2 z-score

law of large numbers (LLN)
What is sampling distribution?
Draw 20 people from 1000 people

2nd time: draw different 20 people from 1000

3rd time: draw another different 20 people from 1000

(This is sampling distribution because they have the same sample size from a population)
What is sampling distribution of x(bar)?
Find out the x-bar, the mean, from each sample of a sampling distribution

x-bar= N(M1, standard deviation/square root of n)
what is central limit theorem (CLT)?
sample mean (x-bar)

will follow

N(mean, standard deviaton/square root of n)