The database commonly uses an index range scan to access selective data. The selectivity is the percentage of rows in the table that the query selects, with 0 meaning no rows and 1 meaning all rows. Selectivity is tied to a query predicate, such as WHERE last_name LIKE 'A%', or a combination of predicates.
Types of Distribution: Intensive, Selective and Exclusive Distribution. Some of the important types of distribution in international market are 1. Intensive 2. Selective and 3. Exclusive distribution.
As probability theory is used in quite diverse applications, terminology is not uniform and sometimes confusing. 1  The following terms are used for non-cumulative probability distribution functions: 2  Frequency distribution: A frequency distribution is a table that displays the frequency of various outcomes in a sample.