When I ask entrepreneurs and small business owners, it is not unusual for not having any marketing plan. I once read that Sir Richard Branson never had any marketing plan when he started the 1st Virgin business many years ago. In fact in one study of entrepreneurship (I couldn't recall the name of the study) was that as much as 50% of entrepreneurs and business owners don't have a business plan and marketing plan when they first started the business.
Analyzing the Market: You cannot afford to operate on the basis of assumptions about the market and customers. You need to conduct a thorough analysis of the prevailing market environments, your strengths & weaknesses and the existing competition. Study your target customers and get in_depth knowledge of their needs and preferences. Based on this, you can determine your marketing objectives and position your product suitably.