cj research final

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1
Sampling
the process of selecting observations
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Sample element
who or what we are studying
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Population
Whole group of people
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Population Parameter
The value for a given variable in a population
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Sample satistic
The summary description of a given variable in the sample
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Purpose of sampling
To choose a set of things from a population that accurately represents the characteristics of the whole population, you must select elements from the population in a specific way.
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Sampling distribution
The range of sample statistics we will obtain if we select many samples
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Sampling frame
list of elements in our population
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Standard error
A measure of sampling error
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Level of confidence
the probability that the interval estimate contains the population parameter
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Confidence interval
the range of values within which a population parameter is estimated to lie
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Probability theory
gives us a formula for estimate how closely teh sample statistics are clustered around the true value
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Simple random sample
is the ideal sample, the biggest difficulty in getting the simple random sample is getting a population list
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systematic sampling
elements in the total list are chosen for inclusion in the sample
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Stratified sampling
ensures that appropriate numbers are drawn from homogenuos subsets that population
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Disproportionate stratified sample
way of obtaining a sufficient number of rare cases by selecting of the disporoportionate number
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Multistage cluster sample
Compile a stratified group sample it, then sub sample that set.
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Multistage cluster sample with stratification
at any gien stage, you break your sample up into groups and choose X number from each group
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Purposive sampling
Selecting a sample on the basis of your judgment and the purpose of the study
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quota sampling
units are selected so that the total sample has the same distribution of characteristiscs as are assumed to exist in the population being studied
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convenience sampling
using a sample of people who re readily available to participate
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snowball sampling
You interview some individuals, and then ask them to identify others who will participate in the study, who ask others.
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open-ended questions
respondent is asked to provide his or her own answer
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Close-ended questions
a numerical scale used to assess attitudes
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contingency questions
Relevant only to some respondents - answered only based on their previous response
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Matrix questions
Same set of answer categories used by multiple questions
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Strengths of survey research
Useful in descriing large populations, standardized questionnaires can ensure uniform responses and measurement, protects against respondents interpreting concepts differently.
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Weaeknesses of survey reasearch
Standardized questionnaire items often represent the least common denominator in assessing people's attitudes, orientations, circumstances, and experiences, Superficial coverage of complex topics, Survey research cannot readily deal with the specific contexts of social life, Some populations might be hard to contact through customary sampling methods
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Qualitative Interviewing
is an interaction between an interviewer and a respondent where the interviewer has a general plan of inquiry, including topics to be covered.
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Lived experience
the perspective of an individual who has experienced the phenomenon
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Different kinds of Qualitative interviews
Interview schedule: the sturcture of the interview that may have predetermined questions or topical areas to be discussed.
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Structured interviews
created standardized responds, so respondents are given the same stimulus, allowing for responses to be compared
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Semi-Structured interview
have standardized questions but allows the interviewer to explore themes that emerge during the interview
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Unstructured interviews
are the most open style interviewing, Provides the most breadth, depth and natural interaction with participants.
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Focus Group interviews
can be used to generate hypotheses, or combined with other types of data gathering such as participant observation
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interview Schedule
a survey instrument containing the questions asked by the interviewer in an in-person or phone survey
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Probes
Prompt participants to elaborate on responses by filling in more detail and depth.
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Gaining access
Establish your role: determine if you are an insider or outsider, To gain access to a formal organization, you will need to identify yourself as a researcher and make a formal request and receive formal approval, Best to use a four-step process: sponsor, letter, phone call, and meeting, To gain access to information subcultures researchers can gain access using a sponsor or hang out where subjects hang out, Compensation might be necessary to encourage participation.
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Ethnography
Focuses on detailed and accurate description rather than explanation
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Field research
research done in natural, real-life settings outside the laboratory
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Participant-as-observer
Make known your position as researcher and participate with the group
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observer-as-participant
Make known your position as a researcher; do not actually participate
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complete observer
observes without becoming a participant
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complete participant
Participates fully; true identity and purpose are not known to subjects -is a police officer undercover - if you are a complete participant that does not protect you from criminality
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Field notes
Observations are recorded as written notes, often in a field journal; first take sketchy notes and then rewrite your notes in detail
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Structured observations
Observer mark closed-ended forms, which produce numeric measures
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weaknesses of structure observation
Low reliability - often very personal, Generalizability - Personal nature may produce findings that may not be replicated by another, Precise probability samples can't normally be drawn.
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strengths of structure observation
Provides great depth of understanding, Flexibility, More appropriate to measure behavior than surveys, High validity; quant. Measures - Incomplete picture
49
Likert Scale
a numerical scale used to assess attitudes
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