STAT-151 Study Guide - Comprehensive Final Exam Guide - Variance, Theorem, The Mighty Handful
20 Nov 2018
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Document Summary
Statistics is a speci c area of study and investigation which can roughly be divided into two parts: descriptive statistics and inferential statis- tics. Techniques of descriptive statistics include graphs, charts and tables and various descriptive calculations (called numerical summaries). In order to de ne inferential statistics, we need to distinguish between two kinds of data collections. Population: the collection of all individuals or items under consideration in a statistical study. Sample: that part of the population from which information is actually obtained. The selection of a few elements from the population is called a sample. One of the most important problems in applied statistics is how to use the data set of a sample to determine meaningful information about the population. Inferential statistics ing and measuring the reliability of conclusions about a population based on information obtained from a sample of the population. The subject that links descriptive and inferential statistics is bility.
