sample selecting

Dolly Ramos G

After identifying the general problem What info

How to obtain

You need to select the unit of anaylisis (sample) Research and studies have numerous

however

the researcher needs to know exactly

• What to observe•Where to observe

•Whom to ask

•short “sampling”

PS=how many and how often = QN studiesNPS or purposive /purposeful= QL studies

“are logic as long as the field were experts mainly answer QL problems”

insight

Discover

understandto learn the most

In a Medical case = not any consultant is not called to provide an opinion but those who have the experience on that specific cases .

Purposive or purposeful samplingLie in selecting information rich-case (IRC)

those samples from which we can learn a great deal about issues of central importance to the purpose of the research

Fits the profileGraduate ss

Rare attribute

A prof athlete

Charact of interest

Wides range of chrac

Ongoing/aheadEmerging theory

Referring others

Name others

Ow

n b

enef

itFi

rend

or c

lass

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Get together with your peer or peers Write down a paragraph in which it states the sample the type of sampling you will

be using and how it applies to your studyType of samplingNumber of participantsWhere are they fromAge averageGenderWhy this sampling

There is no answer

It depends on: Questions being ask Data being gathered The analysis in the process The source you have to support the study

•Lincoln & Guba: Recommend sampling until a point of saturation or redundancy is reached (no new info)•Random sampling give validity to the study•Patton: specifically minimum size based reasonable coverage•Sample chosen in relevance to the research problem