One of the main variables for evaluating whether a segment is attractive is whether the segments are

One of the main variables for evaluating if a segment is attractive is its sales. The sales of that particular segment reflects its popularity to consumers which also connects to good customer feedback. And this also means the products they are selling are fit for the consumers in their location. 

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.