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Statistical Techniques and Concepts

Statistics is the science of collecting, organizing , presenting, analyzing, and interpreting data to assist in making more effective decisions. Statistics can be divided into two broad areas:

Descriptive statistics and

Inferential statistics

 Descriptive statistics are used to describe and summarize the properties of the mass of data collected from the respondents. Displays of data, such as histograms and box-plots, are also considered techniques of descriptive statistics.

Inferential statistics are used to infer the properties of the population from the properties of the sample. It consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions.



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