Meaning of Hypothesis A hypothesis is an assumption about relations between variables. It is a tentative explanation of the research problem or a guess about the research outcome. Before starting the research, the researcher has a rather general, diffused, even confused notion of the problem. It may take long time for the researcher to say what questions he had been seeking answers to. Hence, an adequate statement about the research problem is very important. What is a good problem statement? It is an interrogative statement that asks: what relationship exists between two or more variables? It then further asks questions like: Is A related to B or not? How are A and B related to C? Is a related to B under conditions X and Y? Proposing a statement pertaining to relationship between A and B is called a hypothesis. The hypothesis is outlined as following: “Hypotheses square measure single Continue reading
Research Methodology
Exploratory Research – Explanation and Methods
Exploratory research is conducted to clarify ambiguous problems. Management may have discovered general problems, but research is needed to gain better understanding of the dimensions of the problems. Exploratory studies provide information to use in analyzing a situation, but uncovering conclusive evidence to determine a particular course of action is not the purpose of exploratory research. Usually, exploratory research is conducted with the expectation that subsequent research will be required to provide conclusive evidence, It is a serious mistake to rush into detailed surveys before less expensive and more readily available sources of information have been exhausted. In an organization considering a program to help employees with childcare needs, for example, exploratory research with a small number of employees who have children might determine that many of them have spouses who also work and that these employees have positive reactions to the possibility of an on-site child-care program. In such Continue reading
Referencing a Research Report
References must be explicitly given in the research report. Bibliography is one type of referencing a research report and this has been already dealt. Other type of referencing is the foot notes. Referencing using Footnotes Footnotes are meant to give complete bibliographical references and to provide the reader with information to enable him consult sources independently. These may be placed at the foot of a page or at the end of every chapter. When footnotes are given at the foot of the page, they are to be separated from the text by a fifteen space solid line drawn from the left margin and one double space below the last line of the text. If given at the end of a chapter, a centered heading ‘FOOTNOTES’ is necessary. Reference to footnotes is made by the use of superscripts i.e., numerals raised by one-half space. Footnotes should be numbered consecutively through a Continue reading
Measures of Central Tendency and Variability
Central tendency is a statistical measure that identifies a single score as representative of an entire distribution of scores. The goal of central tendency is to find the single score that is most typical or most representative of the entire distribution. Unfortunately, there is no single, standard procedure for determining central tendency. The problem is that there is no single measure that will always produce a central, representative value in every situation. There are three main measures of central tendency: the arithmetical mean, the median and the mode. The mean of a set of scores (abbreviated M) is the most common and useful measure of central tendency. The mean is the sum of the scores divided by the total number of scores. The mean is commonly known as the arithmetic average. The mean can only be used for variables at the interval or ratio levels of measurement. The mean Continue reading
Pre-Testing Research Data Collection Instruments
The tool or instrument of data collection namely the schedule or the questionnaire should be pre-tested before adopted for data collection on the study. Pre-testing simply means, testing the validity, reliability, practicability and sensitivity of the tool before it is used for actual data collection. The only way to gain assurance that questions are unambiguous is to try them on a selected small group of prospective respondents. Process of Pre-testing Pre-testing can be done in parts. Different sub-parts in the main part of the questionnaire/schedule can be differently pre-tested. So a series of small pre-test on different units of the tool can be done. A full scale pre-test of the whole tool can be done if needed finally or in lieu of the series of pre-tests is small bits. Pre-testing must be done on a sample that is representatives of the population. May be 10 to 12 respondents for pre-testing Continue reading
Meaning of Sampling and Steps in Sampling Process
Sample and Sampling A Sampling is a part of the total population. It can be an individual element or a group of elements selected from the population. Although it is a subset, it is representative of the population and suitable for research in terms of cost, convenience, and time. The sample group can be selected based on a probability or a non probability approach. A sample usually consists of various units of the population. The size of the sample is represented by “n”. A good sample is one which satisfies all or few of the following conditions: Representativeness: When sampling method is adopted by the researcher, the basic assumption is that the samples so selected out of the population are the best representative of the population under study. Thus good samples are those who accurately represent the population. Probability sampling technique yield representative samples. On measurement terms, the sample must Continue reading