SOC221H5 Lecture Notes - Lecture 7: Cognitive Bias, Standard Deviation, Sampling Distribution
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Non probability: (i"ll discuss a few kinds) Ex. sampling people about opinion on capital punishment. Work with adults over 18 in canada. Goal: chose a sample that represents the whole population of canada in order to make inferences: convenient sample. Going over to square one to ask people about the death penalty and why they feel that way. Research picks sample based on what is convenient for them. Aren"t necessarily a representation of the population: quota sampling method. Go to square one, and tell your assistants to go up to 51 women and 49 men. Purposive (which is also non-probability; i"ll discuss a few more kinds) Goal: not just to randomly select people, it is guided by a research question that affects a specific group of people. Depends on your research question: maximum variation. Purposely selecting people to have a wide range, relating to what you"re studying.
