ISO 3534–2 defines applied statistics terms, and expresses them in a conceptual framework in accordance with normative terminology practice. Term entries are arranged thematically within a conceptual framework. An alphabetical index is provided. Standardized symbols and abbreviations are defined. ISO 3534-1 and ISO 3534 -2 are intended to be compatible. They share the common goal of restricting their respective mathematical levels to the minimum levels necessary to attain correct and concise definitions. Part 1 on terms used in probability and statistics is foundational so, by necessity, is presented at a relatively more sophisticated mathematical level. Users of Part 2 on applied statistics may occasionally consult Part 1 for certain terms, therefore notes following selected terms in Part 1 are provided in the form of verbal descriptions of a less technical nature. Although these informal descriptions, given in the notes, are not a substitute for formal definitions, the intent is to serve the needs of multiple users of these terminology standards.