Презентация, доклад Sampling in quantitative research


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Презентации» Математика» Sampling in quantitative research
Question
 Tell whether the following statement is true or false:
 TheAnswer
 False
 
 The aggregate of cases in which a researcherBasic Sampling Concepts in Quantitative Studies
 Population: the aggregate of casesEligibility Criteria
 Establish population characteristics 
 Determine participation in study
 MaximizeQuestion
 Tell whether the following statement is true or false:
 ResearchersAnswer
 False
 Researchers usually sample from the accessible population but shouldBasic Sampling Concepts in Quantitative Studies
 Representative sample
 A sample whoseQuestion
 Tell whether the following statement is true or false:
 ProbabilityAnswer
 True
 Probability sampling involves random selection of elements.Basic Sampling Concepts in Quantitative Studies (cont.)
 Probability sampling
 Involves randomNonprobability Sampling
 Convenience sampling 
 Snowball sampling 
 Quota sampling
 ConsecutiveProbability Sampling
 Simple random sampling
 Stratified random sampling
 Multistage sampling
 ClusterPower Analysis
 Estimate sample size
 Large samples preferred to small samples



Слайды и текст этой презентации
Слайд 1
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Слайд 2
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Question Tell whether the following statement is true or false: The aggregate of cases in which a researcher is interested is called a sample.

Слайд 3
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Answer False The aggregate of cases in which a researcher is interested is called a population. A sample is selection of a portion of the population to represent the entire population.

Слайд 4
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Basic Sampling Concepts in Quantitative Studies Population: the aggregate of cases in which a researcher is interested Sampling: selection of a portion of the population (a sample) to represent the entire population  Element: basic population unit about which information is collected

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Eligibility Criteria Establish population characteristics Determine participation in study Maximize construct validity Inclusion Exclusion

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Question Tell whether the following statement is true or false: Researchers usually sample from the target population.

Слайд 7
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Answer False Researchers usually sample from the accessible population but should identify the target population to which they want to generalize their results.

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Basic Sampling Concepts in Quantitative Studies Representative sample A sample whose key characteristics closely approximate those of the population Sampling bias The systematic over- or underrepresentation of segments of the population on key variables

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Question Tell whether the following statement is true or false: Probability sampling involves random selection of elements.

Слайд 10
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Answer True Probability sampling involves random selection of elements.

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Basic Sampling Concepts in Quantitative Studies (cont.) Probability sampling Involves random selection of elements   Nonprobability sampling Does not involve selection of elements at random

Слайд 12
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Nonprobability Sampling Convenience sampling Snowball sampling Quota sampling Consecutive sampling Purposive sampling

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Probability Sampling Simple random sampling Stratified random sampling Multistage sampling Cluster sampling Systematic sampling

Слайд 14
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Power Analysis Estimate sample size Large samples preferred to small samples


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