CJ 280 Study Guide - Midterm Guide: Descriptive Statistics, Stratified Sampling, Cluster Sampling

• School: University of Alabama
• Department: Criminal Justice
• Course: CJ 280
• Professor: Mark Lanier

Document Summary

Common words, but specific means to this class: Where the sample is not representative of the population. Subjects drop out before the study is over. Ex: people may die before the study is over if you"re studying. Ex: if you want to end up with 1000, start with 1500. How to use a table of random numbers (list the 4 steps) - 12 points on test. The most basic type of probability sample. The larger your sample, the better the sample because it"s more representative (but there comes a point of diminishing return - you hit a peak) Each element has an equal chance of being selected. The problem is that you need to know what the sampling frame is - which often you do not. Steps (know what they mean, so think/explain the example he had in class): Draw up list of all those in population (sampling frame) Select a number from random number chart for place to start.