Observation,
Experiment,
Surveys,
Interviews,
Questionaires
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ther are only two different ways that scientist does not collect data
We collect data to see what needs improvement.
There are several ways to collect marketing data, either by one's own efforts or by hiring a firm that specializes in this area. One way is to conduct random surveys by mass mailing or calling individuals. Other ways are to collect information such as zip codes, birthdates, and e-mail addresses at the point of sale. Finally, one can collect marketing data by recording various metrics about traffic on one's website.
There are a number of ways, but I would just use an observational study.
The initial data that you collect is raw data.