I am sorry TANVIGOYAL ... UPANSA's answer is fine, but should be merged with BRIJESHNAMDEV's reply because both would complete each other.
Consumer-buying behaviour (CBB) depends on many factors, out of which the following are the most common:
1- The "Values" that the people at a certain place and time consider. and this one depends on :
a- Politics
b- Social and Relegious beleifs
c- Economics
d- Culture
2- The Demographic Profiling
a- Age groups
b- Sex Groups
c- Families and SIngles
d- Education
3- Economics:
a- Distribution channels
b- Income Groups
c- Awareness and Media
4- Product:
a- Presentation
b- Need and need satisfaction
c- Price
d- Promotion
All these factors and much more ... a long list ... should be taken into consideration when measuring or studying Consumers Buying Habits.
Nabeel S. Al Wazzan
Marketing & Sales Consultants
www.memco-kwt.com