Lesson 7: Sampling Distributions

• Overview:
  1. Start with a population of any shaped distribution
  2. Take all possible samples of size n and find the sample means
  3. Graph distribution of sample mean
• Result:
  • Normal distribution
  • Mean == population mean
  • standard deviation = SE = pop_standard_deviation / sqrt(sample_size)

• Central Limit Theorem
  • given any population shape, if you take a sample from it and calculate the mean enough times, you'll get a normal distribution