Biology 2244A/B Lecture Notes - Lecture 8: Central Limit Theorem, Statistic, Sampling Distribution
12 Dec 2017
School
Department
Course
Professor
Document Summary
Statistic: number that can be computed from the sample data, estimates unknown parameter (cid:862)statistics come from samples, parameters come from populatio(cid:374)s(cid:863) = mean of a population x bar= mean of a sample. Would take on a different value if we chose a different sample. Estimate of the mean of the underlying population. Population proportion (p): proportion of individuals of a given type in a population. Sampling distribution (of a statistic): probability distribution of a sample statistic built from all possible srss of size n from the population. If the sample size is large enough, the distribution of sample means can be approximated by a normal distribution. Only works for sample means, not other types of statistics.
