SOC202H1 Chapter Notes -Frequency Distribution, Sample Size Determination, Central Tendency
Document Summary
Central tendency statistic (cts) provides an estimate of the typical, usual or normal score found in a distribution of raw scores: three central tendency statistics, each has strengths/weaknesses. The mean the sum of all scores in a distribution divided by the number of scores observed (sample size) Most useful of central tendency statistic for summary of typical/avrg score: conceptually: mean = value of the scores in the distribution if every subject has the same score equal share . To combine 2 different size samples: add sum of all scores of both groups divided by total sample size. Frequency distribution curves a substitute for frequency histogram or polygon in which we replace these graphs with a smooth curve. Auc represents the total number of subjects in the population: equal to a proportion of 1. 00 or percentage of 100 percent. Smooth curve == estimate way scores are distributed in the population: not depict sample distribution.
