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.
Frequency Distributions. â¢ After collecting data, the first task for a researcher is to. organize and summarize the data to get a general overview of. the results. â Remember, this is the goal of descriptive statistical techniques. â¢ One method for simplifying and organizing data is to construct. a frequency distribution. â Frequency â describes the number of times or how often a category, score, or range of scores occurs. â Frequency distribution â a summary display for a distribution of data. 01:830:200:01-05 Fall 2013.