Statistics short Definitions

Statistics

Collection of methods for experiments, collecting data, and then organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions.

Variable

Any characteristic or attribute that can take different values

Random Variable

A variable whose values are determined by chance.

Population

Aggregates of objects. These objects posses some common characteristics that is being studied.

Sample

Any subset of the population.

Parameter

Any Characteristic or measure computed from the population.

Statistic 

Any Characteristic or measure computed from a sample.

Descriptive Statistics

Collection, organization, stigmatization, and presentation of data.

Inferential Statistics

Generalizing from samples to populations using probabilities. Performing hypothesis testing, determining relationships between variables, and making predictions.

Qualitative Variables

Variables which assume non-numerical values. I representes qualitative data.

Quantitative Variables

Variables which assume numerical values.

Discrete Variables

Variables which assume a finite or countable number of possible values. Usually obtained by counting.

Continuous Variables

Variables which assume an infinite number of possible values. Usually obtained by measurement.

                                                                                                                    By: Sir Baqar Ali