STAT 3460 Lecture Notes - Lecture 1: Simple Random Sample, Cluster Sampling, Descriptive Statistics
20 Jan 2016
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Document Summary
Statistics the science of analyzing data: the objective of statistics is to make inferences about a population based on the information contained in a sample from that population and to provide an associated measure of goodness for. Population the entire collection of objects or outcomes about which information is sought. Parameter characteristic of the population: example: finite population. Parameter: number of hours osu students spend studying during finals week. Statistic: average of the values for the students in the sample. Statistic a value computed from the observations in a sample. Tangible and conceptual populations objects: tangible population a finite population consisting of actual physical, conceptual population an infinite population from an experiment consisting of all values that could possibly have been observed. Independence: independent when knowing some of the items in a sample does not help predict the values of the others.
