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sanshengshi626 / daka-statistics

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Day2 #2

Open sanshengshi626 opened 5 years ago

sanshengshi626 commented 5 years ago
  1. Central limit Theory: The central limit theorem states that the distribution of sample means approximates a normal distribution as the sample size gets larger mean of sample mean=mu(true mean of population) variance of sample mean=var/n(var is population variance, and n is sample size)
  2. Confidence interval: X ± Z s√n
  3. Bernoulli: mean=p var=p(1-p)