business such as tesco can use market reseach to understand behaviour of customer,competitor and the market information. they can collect this information through the use of focus groups,customer inteviews,questionares,teachnology-internet feedbacks,user groups, postal surveys etc.
later they can process this information and have a use it to improve the customer wants and needs, to stay ahead of their competitors and also have a freindly relationship marketing environment with the customer.
an example of a research would be focus gropus have identified more customer of tesco both poor and rich care about the standard of hygeine of tesco this is where they secretly watch around the market and tills.

 they also do customer interviews, postal surveys and user group questionares in which they ask customer and make a detailed informantions of complaints,enquires and compliments and identify what customer are taking hold of what their interest is most likely going on and later conclude what they are looking for and imprve it.

,they also research through the help of technology in their website people also post complaints and enquires which are called internet feedbacks later they take action on it this has work out than any other trends so now they can focus on that critea and improve it thus increase their customer and earn more profit.

Comments

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How about some explanation of the methods you have identified?