What is meant by Dispersion? The extent to which individual observations spread out from the central value is called dispersion. There are various measures which are used to express the degree of variation quantitatively. These measures are called measures of variation. Let’s discuss in detail measures of dispersion:- MEASURES OF DISPERSION There are two kinds…

## CENTRAL TENDENCY | MEASURES OF CENTRAL TENDENCY

What is meant by Central Tendency? A measure of central tendency gives information about the central position of data. This information is usually very useful in understanding a set of data and is used widely in a number of problems. It has many drawbacks as well, although it is an effective tool of Statistics. For…

## PRESENTATION OF DATA | FREQUENCY DISTRIBUTION

What is mean by a presentation of Data? There are various methods of collecting statistical raw data. Whatsoever method is used in the collection of data, the question arises; what is the procedure for presentation of data? Everyone is aware of the fact that raw data is in great bulk and it is very difficult…

## WHAT IS DATA COLLECTION | METHODS OF DATA COLLECTION

What is Data Collection? We know that Data Collection is an important element in Survey method. data are collected in various ways.Different methods can be adopted for the data collection e.g. questionnaire method, interview method including personal interviews and telephone interview. Mail survey method is also utilized. Let’s discuss in detail various ways of data collection;-…

## WHAT IS QUESTIONNAIRE | TOOL OF SURVEY

What is questionnaire? To collect information about the problem under study different can be utilized. It can be the questionnaire or any other prescribed test to scale. The main task is to translate the research question into an interview or other instrument constructed for the survey. Selection of tool is determined according to the nature…

## POPULATION AND SAMPLING | TYPES OF SAMPLING

What is Sampling? A most critical issue in the survey method is the identification of subjects to whom the instrument will be administered or questions will be asked. Those people are typically called a sample, which means is known a group as their subjects drawn from some larger group. This larger group population that includes…

## STATISTICAL DATA | TYPES OF STATISTICAL DATA

What is Statistical Data ? Statistics deals with numerical data and the data are collected from the whole of the Universe is under study. But due to the limitation of resources, the conclusions are drawn about the whole by selecting only a sample from the whole. In Psychology, the data are collected from different studies,…

## WHAT IS STATISTICAL | IMPORTANCE OF STATISTICAL

What is Statistical ? The word statistics is derived from Latin word status and Italian word statistic, while in 1749, Gottfried Achen wall used the German word Statistic, All these words stand for political State. It is used the word that stands for political knowledge regarding civilization, industry, and policies of the government. so…