STAT 2606- Midterm Exam Guide - Comprehensive Notes for the exam ( 36 pages long!)
16 Feb 2018
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Document Summary
The range is the most obvious measure of dispersion and is the difference between the lowest and highest values in a dataset. The inter-quartile range is a measure that indicates the extent to which the central 50% of values within the dataset are dispersed. It is based upon, and related to, the median. The standard deviation is a measure that summarises the amount by which every value within a dataset varies from the mean. The statistical mean refers to the mean or average that is used to derive the central tendency of the data in question. It is determined by adding all the data points in a population and then dividing the total by the number of points. The resulting number is known as the mean or the average. The median is the value separating the higher half of a data sample, a population, or a probability distribution, from the lower half.
