Statistics 2 Mark Each

An attribute is a qualitative variable which is non - numerical. For example, profession. marital status, level of education, sex, honesty, habit of smoking, etc. are attributes which are non- numerical means cannot be expressed in numbers.

A characteristic varies from unit to unit of a population or a sample is called a variable characteristic. It can be either numerical or non- numerical. The variable characteristic which is non - numerical is called an attribute and that which is numerical is called numeric variable.

Some of the statistical data may not be published. Such data may be collected on request from the unpublished internal records of private and public organisations. Also some data may be drawn from the research papers, articles and essays, etc. Such data is called unpublished data.

A list of questions relevant to the object of the study keeping the space between the questions for the answers is called questionnaire.

The set of all the observations obtained by inspecting a variable characteristic defined on population units or sample units is called data.

The definition of statistics given by Croxton and Cowden is as under : “Statistics is the science which deals with the collection, analysis and interpretation of numerical data.”