Research Design: Sampling, Pilot Testing, Quantitative and Qualitative Analysis, Visual, Documentary and Oral History Approach

Running head: RESEARCH DESIGN
Research design
Name of the Student:
Name of the University:
Author note:

1RESEARCH DESIGN
Table of Contents
Difference between randomized and non randomized approaches to sampling population:..........2
Advantages and disadvantages of snowball sampling:....................................................................2
Usefulness of pretesting, pilot testing, or field testing a survey or interview questionnaire:..........3
Analysis of quantitative and qualitative scenario in large scale research projects:.........................3
Difference and similarities between visual, documentary and oral history approach:....................4
Benefit of conveying human experience through audio-video method and written interpretation: 4
Form of approach that is suitable in sharing human experience in society:....................................5
References:......................................................................................................................................6

2RESEARCH DESIGN
Difference between randomized and non randomized approaches to sampling
population:
A sample may be called random when every person in the sampling population has the
same or equal possibility of getting selected. Randomized sampling allow to hypothesize the
public and is definitely the best method of representing a universal sample. Convenience sample
or systematic sample is another method of sample selection where the sample is not random. A
non random or convenience sample is a group that is chosen on the basis on their possibility or
availability. Medical testing on particular disease is an example of the method of nonrandomised
population sampling (Ezzy 2013).
Importance of the role of sampling in conducting research:
Compared to census, sampling is more accurate as it requires less resources and it quickly
provides the required data or information. Sampling makes the reasoning of the research viable.
Advantages and disadvantages of snowball sampling:
The main advantage of snowball sampling is that it is cost-efficient and simple as it
requires less workforce or manpower and small planning in comparison to other methods of
sampling.
The main disadvantage of snowball sampling is that it does not guarantee about the
sample representation and there are chances of sample bias in the sampling that could result in
the possibility of getting the sample of small subgroup of total population.
Usefulness of pretesting, pilot testing, or field testing a survey or interview
questionnaire:
The main usefulness of the pilot testing is to find out whether the effort of conducting a
large scale survey is worthy or not. In pilot testing, the appropriateness of the instructions are