Market Segmentation is the process of grouping a market into smaller subgroups. This is not something that is arbitrarily imposed on society : it is derived from the recognition that the total market is often made up of submarkets (called segments). These segments are homogeneous within (ie.: people in the segment are similar to each other in their attitudes about certain variables). Because of this intra-group similarity, they are likely to respond somewhat similarly to a given marketing strategy. That is, they are likely to have similar feelings about a marketing mix comprised of a given product, sold at a given price, distributed in a certain way, and promoted in a certain way.
The requirements for successful segmentation are:
- homogeneity within the segment
 - heterogeneity between segments
 - stability of segments
 - segments are measurable and identifiable
 - segments are accessible and actionable
 - segment is large enough to be profitable
 
 The variables used for segmentation include: 
- Geographic Variables
- region of the world or country
 - country size
 - climate
 
 - Demographic Variables
- age
 - gender
 - sexual orientation
 - family size
 - family life cycle
 - income
 - occupation
 - education
 - socioeconomic status
 - religion
 - nationality
 
 - Psychographic Variables
- personality
 - life-style
 - values
 - attitudes
 
 - Behavioural Variables
- benefit sought
 - product usage rate
 - brand loyalty
 - product end use
 - readiness-to-buy stage
 - decision making unit
 
 
When numerous variables are combined to give an in-depth understanding of a segment, this is referred to as 
depth segmentation. When enough information is combined to create a clear picture of a typical member of a segment, this is referred to as a 
buyer profile. A statistical technique commonly used in determining a profile is 
cluster analysis.
see also: marketing, target market, consumer behaviour[?]
 
All Wikipedia text 
is available under the 
terms of the GNU Free Documentation License