Chi-square test

Chi-square test

Chi-square test definition A Chi-square test is performed to determine if there is a difference between the theoretical population parameter and the observed data. Chi-square test is a non-parametric test where the data is not assumed to be normally distributed … Read more

Questionnaire- Types, Format, Questions

Questionnaire- Types, Format, Questions

A questionnaire is defined as a document containing questions and other types of items designed to solicit information appropriate for analysis. The questionnaire may be regarded as a form of an interview on paper. Procedure for the construction of a … Read more

Types of Bias in Epidemiology

Common Types of Bias

Any trend in the collection, analysis, interpretation, publication, or review of data that can lead to conclusions that are systematically different from the truth can be termed as bias. Bias is a major consideration in any type of epidemiologic study … Read more

Questionnaires and Schedules

Questionnaires and Schedules

The research process is incomplete without the collection of data, which starts after the identification of the research problems and chalking out research design. There are several methods involved in the collection of primary data, like observation, interviews, questionnaires, schedules, … Read more

Data and its types

Data and its types

Data is a set of values of subjects with respect to qualitative or quantitative variables. Data is raw, unorganized facts that need to be processed. Data can be something simple and seemingly random and useless until it is organized. When … Read more

Common mistakes in Proposal writing

Common mistakes in Proposal writing

Some of the mistakes are: Choosing a topic that is too large. Choosing a topic which is too complex for research at the level of the researcher. Not giving due consideration to the time factor. This factor is important because … Read more

Questionnaire method of data collection

Questionnaire method of data collection

Questionnaire is as an instrument for research, which consists of a list of questions, along with the choice of answers, printed or typed in a sequence on a form used for acquiring specific information from the respondents. In general, questionnaires … Read more

Nominal, Ordinal, Interval and Ratio Data

Nominal, Ordinal, Interval and Ratio Data

Depending on the measurements, there are four different types of data that can be achieved. These different types of data are nominal, ordinal, interval and ratio data. These different variances of data vary in complexity of obtaining. Nominal Data Nominal … Read more

Primary Data and Secondary Data

Primary Data and Secondary Data

There are two major approaches to gathering information about a situation, person, problem or phenomenon. When you undertake a research study, in most situations, you need to collect the required information; however, sometimes the information required is already available and … Read more