EIA (Energy Information Administration) Publications Manual: Statistical Graphs

摘要

Statistical graphs both illustrate a set of data and provide an analytical perspective. The distinction between these two functions is one of emphasis. Where the purpose of a graph is to dramatize or highlight a set of data, its primary function is illustration. Where the purpose of a graph is to explore, measure, calculate, and derive relationships, the primary function of the graph is analytical. In general practice, these two functions can be so interdependent as to be indistinguishable. The following guidelines are intended to aid in resolving problems common to the presentation of data in statistical graphs. The variety and complexity of data to be presented call for a flexible approach; therefore, the following examples are intended not as inflexible specifications but rather as guides to the design of graphs that are attractive and easily understood. All the types of graphs discussed here have appeared in EIA publications. A list of references that provides further examples is included. Also included is a glossary of statistical terms used in discussing the statistical properties of different types of graphs. 11 refs., 24 figs.