“All progress is born of inquiry. Doubt is often better than overconfidence, for it leads to inquiry, and inquiry leads to invention” is a famous Hudson Maxim in context of which the significance of research can well be understood. Increased amounts of research make progress possible. Research inculcates scientific and inductive thinking and it promotes the development of logical habits of thinking and organization. Research provides the basis for nearly all government policies in our economic system. For instance, government’s budgets rest in part on an analysis of the needs and desires of the people and on the availability of revenues to meet these needs. The cost of needs has to be equated to probable revenues and this is a field where research is most needed. Through research we can devise alternative policies and can as well examine the consequences of each of these alternatives. Decision-making may not be a Continue reading
Research Methodology
Sources of Hypothesis in Research
A hypothesis is an assumption about: The relationship between/among variables or The level of influence of independent variables on the dependent variable or The value of population parameter. Thus relationship between income and brand preference, between education and habit of savings, between cost of capital and capital structure, between motivation and productivity, etc., are hypotheses of the first type. The influence of sales on profit, of profit on value of business, of reward on performance and such other things are the second type. The third type involves putting values on population parameters such as the mean monthly salary of students who graduated from a particular university in the first year of their employment is 1000$ in 2012 or on an average management graduates wait for 6 months after graduation to get job or 40% management graduates get administrative jobs and so on. Sources of Hypothesis There are diverse sources of Continue reading
Sampling Methods in Research
Sampling is that part of statistical practice concerned with the selection of an unbiased or random subset of individual observations within a population of individuals intended to yield some knowledge about the population of concern, especially for the purposes of making predictions based on statistical inference. Sampling is an important aspect of data collection. There are two basic approaches to sampling: probabilistic and non-probabilistic sampling. A probability sampling scheme is one in which every unit in the population has a chance (greater than zero) of being selected in the sample, and this probability can be accurately determined. The combination of these traits makes it possible to produce unbiased estimates of population totals, by weighting sampled units according to their probability of selection. Example: We want to estimate the total income of adults living in a given street. We visit each household in that street, identify all adults living there, and Continue reading
Steps Involved in Drafting a Research Report
A research report must be well drafted so that it is seriously taken by others and all that have to be said are well said. Reader orientation, purpose orientation, time orientation, technology orientation, etc are all needed. The steps in writing a research report are presented below. 1. Organization of Thought Organization of thought as to how the report be presented is the most fundamental starting point in the journey of preparation of a research report. Ideas come before the mind eye. These are thought over again and a frame of presentation is planned. This plan does not in itself constitute style, but it is the foundation. 2. Acquaintance with the Research Full acquaintance with research is needed. This is facilitated by notes. It is desirable to make notes on separate cards or slips called form-facet. Accuracy and Adequacy are required – The second facet of mastery over notes consists Continue reading
Standard Error in Hypothesis Testing
The standard error is an indispensable tool in the kit of a researcher, because it is used in testing the validity of statistical hypothesis. The standard deviation of the sampling distribution of a statistic is called the standard error. The standard error is important in dealing with statistics (measures of samples) which are normally distributed. Here the use of the word “error” is justified in this connection by the fact that we usually regard the expected value to be true value and the divergence from it as error of estimation due to sampling fluctuations. The term standard error has a wider meaning than merely the standard deviation of simple sampling because of the following reasons; The standard error is mainly employed for testing the validity of a given hypothesis. Mostly two levels of significance (0.05 and 0.01) are used for testing the validity of hypotheses. At 0.05 level of significance, Continue reading
Measurement Scales in Research Methodology
Certain research data are qualitative in nature. Data on attitude, opinion or behavior of employees, customers, and sales persons etc., are qualitative. The terms “attitude” and “opinion” have frequently been differentiated in psychological and sociological investigations. A commonly drawn distinction has been to view an attitude as a predisposition to act in a certain way and an opinion as a verbalization of the attitude. Thus, a statement by a respondent that he prefers viewing color to black-and-white television programs would be an opinion expressing one aspect of the respondent’s attitude toward color television. Motivation, commitment, satisfaction, leadership effectiveness, etc involve attitude measurement based on revealed opinions. These qualitative data require measurement scales for being measured. Types of Measurement Scales used in Research There are four different scales of measurement used in research; nominal, ordinal, interval and ratio. The rules used to assign numerals objects define the kind of scale and Continue reading