Research Methodology

This method implies the collection of information by way of investigator’s own observation, without interviewing the respondents. The information obtained relates to what is currently happening and is not complicated by either the past behavior or future intentions or attitudes of respondents.

Research concerning some natural phenomenon or relating to pure mathematics are examples of fundamental research.

Experience survey means the survey of people who have had practical experience with the problem to be studied. The object of such a survey is to obtain insight into the relationships between variables and new ideas relating to the research problem.

Pilot study is a small-scale experiment or set of observations undertaken to decide how and whether to launch a full-scale project. A pilot experiment, also called a pilot study, is a small scale preliminary study conducted in order to evaluate feasibility, time, cost, adverse events, and effect size (statistical variability) in an attempt to predict an appropriate sample size and improve upon the study design prior to performance of a full-scale research project

Sampling theory is a study of relationships existing between a population and samples drawn from the population. Sampling theory is applicable only to random samples.

Correct answer is (3). 

Accidental sampling (sometimes known as grab, convenience or opportunity sampling) is a type of nonprobability sampling which involves the sample being drawn from that part of the population which is close to hand. That is, a population is selected because it is readily available and convenient. It may be through meeting the person or including a person in the sample when one meets them or chosen by finding them through technological means such as the internet or through phone.

Bibliometrics is a set of methods to quantitatively analyze academic literature. Citation analysis and content analysis are commonly used bibliometric methods. While bibliometric methods are most often used in the field of library and information science, bibliometrics have wide applications in other areas.

Telephone interview is the quickest of all the methods.

The spiral of scientific method is a conceptual framework that studies trends and patterns in research over time. It shows how scientific inquiry evolves, with each cycle building on previous knowledge. This model helps understand how research questions and methods develop through successive iterations, rather than focusing on subject structure (C) or general subject trends (A).

A questionnaire is a structured research tool consisting of a series of questions for gathering information from respondents. It's a primary data collection instrument in survey research. Graph (A) is a visualization tool for presenting results, illustration (C) explains concepts, and interpretation (D) is an analytical process - none are data collection tools like the questionnaire.

Interviews as a data collection method can follow structured formats with fixed questions and response options, or unstructured formats allowing open-ended exploration. This flexibility makes interviews valuable for both quantitative and qualitative research. Direct/indirect refers to interaction style rather than structure, and 'open and close interview' is not standard terminology: open/closed typically refers to question types within interviews.

A research design serves as the blueprint or master plan that outlines the overall approach, methods, and procedures for conducting a study. It specifies what data will be collected, from whom, how it will be analyzed, and how validity will be ensured, much like an architectural blueprint guides building construction. Research design is not merely about procedures or techniques, but the complete framework ensuring the research objectives are met.

Research projects that use working hypotheses use a deductive reasoning or logic of inquiry. In other words, the problem and preliminary theory are developed ahead of time and tested using evidence.

Accidental sampling is a type of nonprobability sampling.