BIOL 2900 Lecture Notes - Quota Sampling, Nonprobability Sampling, Speed Reading
Document Summary
Final test will be on things that wasn"t covered in the midterm, mainly on new materials (qualitative design) Sampling: process where you want to get representative units. In research, population and sample refers to data, inanimate objects included. Population: entire set of individuals defined by the sampling criteria established for the study. De-limitation a. k. a exclusion criteria (your picking a sampling that"s close the population). You wanna make generalization about all diabetes pt for example. Ex of exclusion: health status and diagnosis. 2 types of sampling: probability and nonprobablity (nonrandom) Representativeness: you wanna say that the results of study which included a small group of people that leads to conclusion for the larger group. Probability: in research terms, you wanna ask yourself whats the likelihood of someone being selected. This is the difference between randomization and random selection. 4 types of probability sampling: simple random, statrified random, multistage (cluster) and systematic. Simple random: everyone has a random chance of being selected.
