BIOS 1500 Lecture Notes - Lecture 5: Statistical Inference, John Tukey, Euclidean Distance
Document Summary
These measures are used to characterize" the distribution of a variable under study. Some measure central tendency or location, others variability, and others shape. They rely on the type of variable or measurement) one is analyzing: nominal, ordinal, The simple frequency with which each value of a variable occurs in the sample provides a basic summary of the distribution. This basic summary is often presented with relative frequencies or proportions (frequency divided by the number of observations. The frequency and relative frequency are the basic elements of a frequency distribution". An outlier is a value in the sample that lies outside the pattern containing most of the observed values. Outliers can occur in either tail of a distribution and can be referred to as extreme values. However, the term outlier is descriptive as it captures the idea of being outside the typical pattern or main body" of values.
