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.
The pattern of variability within a set of a data is called the distribution. Introduction to Dot Plots There are two types of data we will be looking at Categorical Data-places someone or something into several groups or categories. For example: favorite color, job titles, names of students, etc. Quantitative Data-measures numerical values. For example: age, height, number of siblings, etc.