Form of random, interval or probability sampling in which the country is divided into areas or clusters. Reduces costs as respondents can be found more quickly. Also, it is useful in countries where statistical details such as Census figures are lacking, and research can be concentrated on urban areas.
The Mathematics of Direct Sales and Performance Marketing Profitability: How to Make One-Shot and Subscription-Based Products and Services Viable
Before you even begin to think about the detailed techniques of performance marketing and selling your product or service directly – the market, the design of the material, the method of order fulfillment – you …