rachbreen
Mind Map by , created over 6 years ago

Mind Map on Sampling, created by rachbreen on 05/13/2013.

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rachbreen
Created by rachbreen over 6 years ago
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Sampling
1 Opportunity
1.1 Whoever happens to go past
1.2 Lots of unconscious bias
1.2.1 Attractive
1.2.1.1 Owe you a favour
1.3 People in this sample like to help
2 Random
2.1 Everyone from targer population has same chance of being used
2.1.1 Names in a hat is usual method
2.2 Not everyone chosen will want to take part
2.2.1 Have to replace, not as random
3 Volunteer
3.1 Quick and easy
3.2 Not typical members of population
3.2.1 Helpful
3.3 Where ad is placed, get certain type of people
3.3.1 Students

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