STAT-2126EL Chapter 3: Stats Ch. 3
8 Mar 2017
School
Department
Course
Professor
Document Summary
Section 3. 1: defining central tendency: central tendency: a statistical measure that attempts to determine the single value, usually located in the center of a distribution, that is most typical or most representative of the entire set of scores. It is possible to have a distribution in which the vast majority of the scores are located on 1 side of the mean. Computing the mean from a frequency distribution table: remember that you can determine the # of scores by adding the frequencies, n = f. 6: x = 10 + 9 + 9 + 8 + 8 + 8 + 8 + 6 = 66, m = x/n = 66/8 = 8. 25. Characteristics of the mean: changing a score, changing the value of any score changes the value of x (the sum of the scores), & always changes the value of the mean.
