STA 2023 Study Guide - Final Guide: Probability Density Function, Random Variable, Sampling Distribution
Document Summary
Population: : median middle number of ordered data set, sample: m. Pi = 1 of the sample points in the sample space: combinations # different samples possible for a sample of n drawn without replacement from a set of n elements; n choose n . N = n! n n! (n n)! *note: p(ac) = 1 p(a: p(a b) = 0 *a & b are mutually exclusive if a b have no sample points in common. *independent event: p(a b) = p(a) or p(b a) = p(b: multiplicative rule p(a b) = p(a b) or p(a b) = p(a b) p(b) / (n n): partitions partitioning set of n elements into k groups n! Variance: 2 = x2 p(x) 2. N n: mean: = nr / n. Variance: 2 = r(n r)n(n n) Standard deviation: = d c / 12.
