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38 Cards in this Set
- Front
- Back
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what is sampling?
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larger group from which the pop is take
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the greater the diviersity of the sample the larger the (1)
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sampling size
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what is the sampling frame?
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is the list of all the accesible members of your pop
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give an ex of sampling frame
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you want to see how ots feel about PAMs. you use the register list from the state of fl. the list is the sampling frame
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what is the sampling frame
you are planing on doing a phone survey. you get numbers from a phone book |
the phone book
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what are (2)types of sampling?
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(1)probalisitc (2)non-probalistic
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what is probalistic sampling?
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is when you draw conclusiosn or make predications about a pop as a whole
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NAMe
this when you draw conclusions or make predications about a pop as a whole |
probabilistic sampling
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what is nonprobalistic sampling?
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is seeing how a smalll group is doing for illustration or explanation ( cannot be applied to pop jst group)
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NAME
this type of sampling is when you want to see how a small group is doing to illustrate or explain |
non-probabilistic sampling
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the key component behind probabilistic sampling is (1)
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random selection
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what is a stratified random sample?
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is when you place people into differ groups and pick them randomly ex men vs women or ot vs pts
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what is a systematic random sample?
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when you use a method such as picking every 5th person
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what type of sampling method is being used
if the department has 1000 employees considering 900 males and 100 females. and you intend to sample 10% of the pop. you proceed randomly as usual drawing 90 males at random and 10 females at random. |
stratified random sampling
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NAME
this type of sampling is appropriate when you are interesting in correcting for gender, race, or age disparities in your pop |
stratified random sampling
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NAME SAMPLING METHOD USED
suppose you had a hudge list of people, places, or things to select from. like 100,000 people or more. to decided to select every 100 person from the list. |
systematic sampling
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what is the sampling interval?
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used in systematic sampling...it the 2nd list of people you get (ex all the people that where 100th on the 1st list)
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NAME
this type of sampling is good to use when you have a big sampling population |
systematic sampling
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what is cluster random sampling?
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is when you divide the pop into clusters (neighborhoods, counties, or other boundaries)and randomly sample everyone in those clusters
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NAME SAMPLING METHOD
you randomly select 5 of north carlonina's counties. and you systematically sample w.in your clusters |
multi-stage sampling
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what is mult-stage sampling?
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is a mix of sampling methods
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what is quota sampling?
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is sampling everybody and everything
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NAME
this sampling method contains bias bc researchers do not make the effort to contact people to diffuclt to research or may resort to haphazard |
quota sampling
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what is convenience sampling?
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is using who just happen to know or walk by or show a special interest in your research
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what are some bias w convenience sampling?
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is not generalizable to big pop and does not represent interests of all
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what is purposive sampling?
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is when the reseacher targets a group of people believed to be average or good for study
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what is snowball sampling?
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do you know somone??
this begins w a few people ..then you ask if they know anyone and keep on going from there |
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what is sampling distribution?
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is hypothetical device that firguartively represents that distrubtion of a statistic acorss an infinite number of samples
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the average of the sample distribution represents (1)
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pop parameters
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(1)represents the pop parameters
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the average of the sample distribution
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what is standard deviation?
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is the spread of scores around the average in a single sample
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NAME
this is the spread of scores around the average in a single sample |
standard deviation
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the greater your standard deviation the greater the (1)
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sampling error
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draw a bell shaped curve
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remember the 65.95.99 rule
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what are some type of non-probabilistic sampling methods(4)
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(1)quota (2)purposive (3)convenience (4)snowballing
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what are some types of probabilistic sampling methods?(5)
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(1)simple random (2)stratified random sample (3)systematic random sample (4)cluster random smaple (5)multi-stage sampling
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if you have a small pop. you should obtain (1)percent of the pop
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10 to 30%
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if you have a big pop you should obtain (1)percent of the pop
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1 percent
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