Data collection, analysis and collection data collection and analysis tools

Specific Data Collection Techniques
Let’s get into specifics. Using the primary/secondary methods mentioned above, here is a breakdown of specific techniques.
Primary Data Collection
Interviews
The researcher asks questions of a large sampling of people, either by direct interviews or means of mass communication such as by phone or mail. This method is by far the most common means of data gathering.
Projective Data Gathering
Projective data gathering is an indirect interview, used when potential respondents know why they're being asked questions and hesitate to answer. For instance, someone may be reluctant to answer questions about their phone service if a cell phone carrier representative poses the questions. With projective data gathering, the interviewees get an incomplete question, and they must fill in the rest, using their opinions, feelings, and attitudes.
Delphi Technique
The Oracle at Delphi, according to Greek mythology, was the high priestess of Apollo’s temple, who gave advice, prophecies, and counsel. In the realm of data collection, researchers use the Delphi technique by gathering information from a panel of experts. Each expert answers questions in their field of specialty, and the replies are consolidated into a single opinion.

Focus Groups
Focus groups, like interviews, are a commonly used technique. The group consists of anywhere from a half-dozen to a dozen people, led by a moderator, brought together to discuss the issue.
Questionnaires
Questionnaires are a simple, straightforward data collection method. Respondents get a series of questions, either open or close-ended, related to the matter at hand.
Secondary Data Collection
Unlike primary data collection, there are no specific collection methods. Instead, since the information has already been collected, the researcher consults various data sources, such as:
Financial Statements
Sales Reports
Retailer/Distributor/Deal Feedback
Customer Personal Information (e.g., name, address, age, contact info)
Business Journals
Government Records (e.g., census, tax records, Social Security info)
Trade/Business Magazines
The internet