Download Exam 2 | SOC 262 - Methods of Social Research and more Quizzes Introduction to Sociology in PDF only on Docsity!
TERM 1
Research population (universe):
DEFINITION 1 rrefers to all persons or units to whom inferences are to be made from the research o Eg: which ballot issue is most important to voters in Ottawa county? Research population- voters in Ottawa County TERM 2
Census:
DEFINITION 2 when data is collected from persons or units in the research populationo Note: US Census- 97% of population- not census! Most likely 3% includes poor, etc, since not accounted for, will not get funding for the people TERM 3
sample
DEFINITION 3 when data is collected from only a subset of persons or units in the research population TERM 4
sampling
frame
DEFINITION 4 a list containing the ID of ever person/unit in the entire research population TERM 5
representation
DEFINITION 5 refers to a sample that contains the same proportions of important variables found in the research population
TERM 6
population parameters
DEFINITION 6 o proportions of important variables found in the research population TERM 7
sample statistics
DEFINITION 7 o are the proportions of important variables found in the sample o So, a sample is considered representative when its sample statistics equal (or are very close) to the population parameters TERM 8
probability theory
DEFINITION 8 if you do not know the population parameters: How can you be reasonably certain that your sample is representative? TERM 9
Binomial Sampling Distribution
DEFINITION 9 when units in a sample can have only one of two possible outcomes o Ex: Nemeths bag of green and yellow marbles TERM 10
Replacement or no replacement of sample:
DEFINITION 10 Problem with not replacing; those marbles out dont have a chance of being drawn Distorts population parameters Technically should replace every time Small sample in very large population- not as big of a deal If drawing a relatively small sample from a large population, the representativeness of your sample will not be significantly effected by not being replaced
