SOCI 315 Lecture Notes - Lecture 1: Simple Random Sample, Uptodate, Royal Institute Of Technology

• School: University of Calgary
• Department: Sociology
• Course: SOCI 315
• Professor: Lloyd Lee Wong

Document Summary

Ex: socrates is mortal, socrates is a man, therefore all men are mortal. Representative sample - needs to be a good representative of. Parameter - numbers that refer to the population o. Statistic - numbers that refer to the sample o. Ex: 75% of u of c students work part-time. Ex: true number of u of c students work part-time. Problem - populations are almost always so large that we are unable to gather info from every case. Solution - sample = carefully chosen subset of the pop o. Use info gathered from the cases in the sample to generalize to the pop. Ex: percentage of a proportion of samples, mean age, standard deviation. Never know the true value of the pop but rather an estimate. Sample must be representative of the pop o. Representative = sample has the same characteristics as the pop.