SOSC 2500 Lecture Notes - Lecture 2: Squared Deviations From The Mean, Central Tendency, Standard Deviation

• School: University of Windsor
• Department: General Arts and Social Sciences
• Course: SOSC 2500
• Professor: Monette

Document Summary

Central tendency: purpose is to get an idea about the centre, or typicality, of a distribution; different ways to do this. Summary stat that provides a measure of the centre of a distribution. Each tell us different info, each is more appropriate to use in certain circum- stances. Mean: calculated by adding all the scores in a distribution and dividing the sum by the number of scores. Summing the scores/values and dividing the total by the number of scores/values. X = individual scores; 5 test scores, 5 x values. Must differentiate btwn mean of a sample and of a population. = population mean (n = number of cases) x with a line above it bc i can"t figure out how to make that on a mac = sample mean (n = number of cases) Term mean is used in reference to a sample and mu (mew) is used in reference to a population; formula is the same.