Literature Review:
There are two types of data collection method that are usually followed in every research. i) Primary data collection ii) secondary data collection. The choice of research method will be based on the feature of research. According to many reports, primary data collection method refers to obtain data from first hand source (Palinkas et al. 2015). It is considered as the initial stage of every research. Primary data collection method includes survey, interview and direct observation and so on. Primary data collection techniques are time consuming. Researcher has the full control over the data collection method. The obtained data can be interpreted in better way in primary data collection method. Obtained data in primary data collection is fresher than secondary data collection. They can decide where and how they will collect the data. Primary data collection consists of two types of data collection method. i) Quantitative Data ii) Qualitative Data (Gale et al., 2013). Quantitative Data includes personal interview, mail and telephonic interview and so on. Qualitative Data includes intellectual interviews, observations and case studies. It is a in- depth research method. Three types of sampling method are followed in quantitative research technique: i) random samples: random sampling refers to the process where every sample will get equal chance. This type of sampling method is very expensive ii) Segment Random Sampling: This sampling method is more focused than random sampling method. It provides information that is more relevant. iii) Quota Sampling: It is a cheaper method than others are, a specific group of members from each segment are interviewed.
References:
Gale, N. K., Heath, G., Cameron, E., Rashid, S., & Redwood, S. (2013). Using the framework method for the analysis of qualitative data in multi-disciplinary health research. BMC medical research methodology, 13(1), 117.
Palinkas, L. A., Horwitz, S. M., Green, C. A., Wisdom, J. P., Duan, N., & Hoagwood, K. (2015). Purposeful sampling for qualitative data collection and analysis in mixed method implementation research. Administration and Policy in Mental Health and Mental Health Services Research, 42(5), 533-544.
