Читать книгу Understanding Statistics As A Language - Robert Andrews - Страница 5

The first function of statistics is to summarize research data for communication. A researcher can communicate a mass of information best by first condensing and summarizing the information.

Definition: A summary is a condensation in which major points of the original account are retained and from which minor points are excluded. The loss of detailed information is regrettable but necessary if the main features of a large amount of data are communicated.

Summarization may involve arranging a set of numbers into a grouped frequency distribution table as an initial step in developing a graph. Central tendencies can then be easily visualized.

Definition: Summary statistics is a tool for collecting, condensing, and organizing numerical data.