SSCI 3910U Lecture Notes - Lecture 3: Standard Deviation, Probability Distribution, Univariate Analysis
Document Summary
The mode (mo: the most frequent, most typical, or most common value in a distribution, the mode is the only measure of central tendency available for nominal- level variables. It can, however, be used to describe the central tendency for variables at any level of measurement: some frequency distributions contain two or more modes. These distributions are referred to as being bimodal in contrast to the more common unimodal variety, which has only a single hump or point of maximum frequency. The median (mdn: when ordinal or interval data are arranged in order of size. To understand this characteristic of the mean, we must first understand the concept of deviation: the deviation indicates the distance and direction of any raw score from the mean: Deviation x = sometimes used as xi. ** in a perfect data set all measures are equal.
