Here are some popular types of graphs and charts: 1  Some of the basic graphs used for categorical data include pie charts and bar graphs, which break down how many responses were given for each group of certain variables, such as gender or which applications are used on teensâ cellphones. An example of a bar graph.
The Electricity Section oversees the regulation of investor-owned electric utilities in Alabama. Only one electric utility, Alabama Power Co., falls under the PSC's regulatory authority, as cooperatives and municipal systems are exempt from state regulation. Additionally, the PSC does not regulate wholesale power generators or the Tennessee Valley Authority (TVA).
The official text of the CAA is available in the United States Code on FDSys, from the US Government Printing Office 42 U.S.C. Â§7401 et seq. (1970) The Clean Air Act (CAA) is the comprehensive federal law that regulates air emissions from stationary and mobile sources. Among other things, this law authorizes EPA to establish National Ambient Air Quality Standards (NAAQS) to protect public health and public welfare and to regulate emissions of hazardous air pollutants.