PRESENTATION
SamplingProcedure
Start
factors Affecting sample selection
Heterogeneity of Population
Sample Size
Sample Method
Statistical Techniques
Time & Cost
Sample Size
- How big should the sample be?
- Based on other’s previous study on how they got their sample
- Ensure the representativeness or accuracy of sample size
Sampling Technique
- Two types: probability sampling and non-probability sampling - Bias is one of the causes of sampling errors (sampling procedure must be accurate)
Heterogeneity of Population
Heterogeneous population is composed of individuals with varied abilities. There is a wide variation among the people composing the population.
Statistical Techniques
The accuracy of the sample depends also on how precise or accurate your methods are in calculating the numbers used in measuring the chosen samples or in giving a certain value to each of them. Any error in your use of any statistical method or computing numbers representing the selected subjects will turn in unfounded results.
Time & Cost
- Consider the amount of money you will fork out for the materials you will need in getting your sample - time and effort should also be considered in choosing your sample
THANKS!
Factors Influencing Sample Selection
johnpaulo17100
Created on April 2, 2021
In choosing your respondents, you do not just listen to the dictates of your own mind but also to other factors such as the following (Babbie 2013; Edward 2013; Tuckman & Engel 2012):
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Transcript
PRESENTATION
SamplingProcedure
Start
factors Affecting sample selection
Heterogeneity of Population
Sample Size
Sample Method
Statistical Techniques
Time & Cost
Sample Size
Sampling Technique
- Two types: probability sampling and non-probability sampling - Bias is one of the causes of sampling errors (sampling procedure must be accurate)
Heterogeneity of Population
Heterogeneous population is composed of individuals with varied abilities. There is a wide variation among the people composing the population.
Statistical Techniques
The accuracy of the sample depends also on how precise or accurate your methods are in calculating the numbers used in measuring the chosen samples or in giving a certain value to each of them. Any error in your use of any statistical method or computing numbers representing the selected subjects will turn in unfounded results.
Time & Cost
- Consider the amount of money you will fork out for the materials you will need in getting your sample - time and effort should also be considered in choosing your sample
THANKS!