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Sample
a smaller set of cases a researcher selects from a larger pool and generalizes to the population
Census
an attempt to count everyone in a target population
non random sample
a type of sample which the sampling elements are selected using something other than a mathematically random process
haphazard sampling
a type of non random sample in which the researcher selects anyone they happen to come across
Quota sampling
type of nonrandom sample in which the researcher first identifies general categories into which cases or people will be selected, then selects predetermined number of cases
purposive sampling
type of nonrandom sample in which a wide range of methods are used to locate all possible cases of a highly specific and difficult to reach population
deviant case sampling
a type of nonrandom sample, in which a researcher selects unusual or nonconforming cases purposely as a way to provide greater insight into social processes or a setting
snowball sampling
a type of nonrandom sample in which the researcher begins with one case, then identifies other cases based on information about interrelationships. this process repeats
sociogram
a diagram or "map" that shows the network of social relationships, influence patterns, or communication paths among a group of people or units
sequential sampling
type of nonrandom sample in which a researcher tries to find as many relevant cases and possible until there is no new information or diversity on the cases
theoretical sampling
A theoretical sample is drawn in a sequential fashion, with settings or individuals selected for study as earlier observations or interviews indicate that these settings or individuals are influential.
theoretical saturation
point which no new themes emerge fro the data. sampling is considered complete
probability sampling
strategies that give every subject in the population the same likelihood of being selected
sampling element
the name for a case or single unit to be selected
population:
the name for the large general group of many cases from which a researcher draws a sample
target population
the large general group of many cases from which a sample is drawn and specified in concrete terms
sampling ratio
number of cases in the sample divided by the number of cases in the population or the sampling frame
sampling frame
list of cases in a population or the best approximation of it
parameter
characteristic of the entire population that is estimated from a sample
statistic
a numerical estimate of a population parameter computed from a sample
sampling error
how much a sample deviates from being representative of the population
margin of error
en estimate about the amount of sampling error that exists in surveys results
random sample
type of sample in which the researcher uses a random number table or similar mathematical random process so that each element will have a n equal chance of being selected
simple random sampling
type of random sample when reasurcher creates a sampling frame and uses a pure random process to select cases
Random number generator
a computer assisted technique used for creating random numbers and selecting random cases in sampling
Sampling distribution:
a distribution created by drawing many random samples from the same population
Central limit theorem
stating that whenever many random samples are drawn from a population and plotted, a normal distribution is formed
Confidence interval
range of values, usually a little higher and lower than a specific value found in a sample where researcher has a specified high degree of confidence that the population parameter lies
Stratified sampling
a type of random sample in which the researcher first identifies a set of mutually exclusive and exhaustive categories
Cluster sampling
type of random sample that uses multiple stages and is often used to cover wide geographic areas in which aggregated units are randomly selected
Random digit dialling
a method of randomly selecting cases for telephone interviews that uses all possible telephone numbers as a sampling frame
Hidden populations
people who engage in clandestine, deviant or concealed activities and who are difficult to locate and study
Inferential statistics:
branch of applied mathematics or statistics based on a random sample
survey research
quantitative social research technique in which one systematically asks many people the same questions and then records and analyzes their answers
interview schedule
the name of a survey research questionnaire when a telephone or face to face interview is used
questionnaire
tool used in survey research consisting of a list of questions asked to a respondent
prestige bias
a problem in a survey research question that occurs when a highly respected group or individual is liked to one of the answers
Double barrelled question:
problem in a research question wording that occurs when two ideas are combined into one question and is unclear whether the answer is for the combination of both or one or the other question
Leading or loaded question
a question that leads the respondent to choose one response over another by its wording
Threatening questions
type of survey research question in which respondents are likely to cover up or lie about their true behaviour or beliefs because the fear a loss of self image/ deviant behaviour
Social desirability bias
bias in survey research in which respondents give a normative response or a socially acceptable answer rather then giving a truthful answer
Mode of delivery
how the data is collected ie over the phone in person
Contingency question:
question with two or more parts in survey research. The answer to the first part of the question determines which of two different questions a respondent receives next
Open ended question:
type of survey question in which respondents are free to offer any answer they wish to the question
Closed ended question:
type of survey research question in which respondents must choose from a fixed set of answers
Respondent fatigue
the tendency for respondents to lose interest in participating in research if they perceive their participation to be taking too long
Partially open question
type of survey research question in which respondents are given a fixed set of answers to choose from, but in addition an other category is offered so they can specify a different answer
Standard format question
type of survey research question in which the answer categories fail to include no opinion, or dont know
Quasi filter question
type of survey research question that includes the answer choice of no opinion or don't know
Full filter question
only respondents with an opinion or knowledge are asked specific questions on the topic
Floaters
respondents who lack a belief or opinion but who give an answer anyways. Often they are inconsistent
Response set bias
an effect in survey research when respondents tend to agree or disagree with every question in a series, rather than thinking through their answer
Wording effect
an effect that occurs when a specific term or word used in a survey research question affects how respondents answer the question
Order effect
effect in survey research in which respondents hear specific question before others and the earlier questions affect their answers to later questions
Funnel sequence
a way to order survey research questions in a questionnaire from general to specific
Cover sheet
one or more pages at the beginning of the questionnaire with information about an interview or respondent
Matrix question
a type of survey research question in which a set of questions is lifted in a compact form together, all questions sharing the same set of answer categories
probe
a follow up question or action in survey research used by an interviewer to have a respondent clarity or elaborate on an incomplete or inappropriate answer
Computer assisted telephone interviewing
survey research in which the interviewer sits in front of a computer screen and keyboard and uses the computer to read questions that are asked in a telephone interview
Computer assisted personal interviewing
similar to computer assisted telephone intervening, but used for in person interviews
Pseudo Survey
someone who has little or no real interest in learning information from a respondent uses the survey format to try to persuade someone to do something