What is important about effective market analysis?

Market research is imperative for a company to know what type of products or services would be profitable to introduce in the market. Also with respect to its existing products in the market, good market research enables a company to know if it has been able to satisfy customer needs and whether any changes need to be made in the packaging, delivery or the product itself. This enables a company to formulate a viable marketing plan or measure the success of its existing plan.