Research Methodology | Sampling | variables complete video

Summary

This video script discusses research methods, focusing on the importance of data collection. It differentiates between primary and secondary data, explains the process of research, and delves into various aspects such as problem identification, literature review, problem formulation, and the use of tools for data collection. It also touches on the significance of variables and sampling in research, highlighting the types of sampling like random, stratified, systematic, and cluster sampling.

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Q & A

What is the main topic of the video?

The main topic of the video is to explain the concept of research methods, focusing on the steps involved and terms related to data collection such as primary and secondary data.

What are the two types of data mentioned in the video?

The two types of data mentioned are primary data and secondary data. Primary data refers to first-hand information collected directly, while secondary data is previously collected information from other sources.

What is meant by primary data collection?

Primary data collection involves gathering information directly from the source, such as through interviews or public interactions, which is then categorized as first-hand information.

Can you explain the concept of secondary data?

Secondary data refers to information that has already been researched or published elsewhere, such as in newspapers, articles, magazines, or interviews. It is collected without conducting original research or fieldwork.

What are some advantages of primary data collection?

Primary data collection offers the advantage of obtaining fresh, current information directly from the source, allowing for high control over the quality of the data collected.

What is the difference between primary and secondary data collection in terms of time and effort?

Primary data collection is a lengthy process that requires significant time and effort, such as conducting interviews and field tests. Secondary data collection, on the other hand, is quicker and involves gathering data from existing sources like publications and records.

What are some common sources of secondary data?

Common sources of secondary data include newspapers, articles, magazines, interviews, government publications, and records.

What is the term used to describe the people from whom data is collected?

The term used to describe the people from whom data is collected is 'respondents.' They are the individuals participating in surveys or interviews during the research process.

What are the three components of analysis mentioned in the video?

The three components of analysis are verification, which checks if the study supports existing non-information; affirmation, which confirms or challenges the information; and justification, which involves the steps taken in the research process.

What is the significance of the research proposal in the context of the video?

The research proposal is significant as it is a formal document required for obtaining government support or funding for the research. It outlines the objectives, methods, and expected outcomes of the research.

What are the nine steps involved in the research process as described in the video?

The nine steps in the research process are problem identification, literature review, problem formulation, method selection, writing the research proposal, tools of data collection, data collection, data analysis, and preparing the research report.

What is the role of variables in research as explained in the video?

Variables in research are the elements that can change during the study. There are two main types: dependent variables, which change in response to the independent variable, and independent variables, which can be manipulated to observe their effect on the dependent variable.

What is sampling in the context of research, and why is it important?

Sampling in research is the process of selecting a subset of the population to represent the whole for the purpose of the study. It is important because it allows researchers to generalize the results to a larger population without the need to collect data from everyone.

What are the two main types of sampling mentioned in the video?

The two main types of sampling mentioned are probability sampling, where every member of the population has a chance of being selected, and non-probability sampling, where the selection is based on the researcher's judgment or specific criteria.

Can you provide an example of systematic random sampling as described in the video?

An example of systematic random sampling could be selecting every 10th person from a concert audience of 10,000 to get a sample of 100 people, ensuring a representative sample of the concert-goers' opinions.

What is cluster sampling, and how does it differ from other sampling methods?

Cluster sampling is a method where the population is divided into clusters or groups, and random samples are taken from these clusters. It differs from other methods as it focuses on smaller, more manageable groups within a larger population, making it easier to conduct the study.