What are the two main types of research instruments used to collect primary data?
surveys and samples
questionnaires and mechanical devices
focus groups and online databases
online panels and experiments
personal interviews and online focus groups

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The Answer of What are the two main types of research instruments used to collect primary data?
surveys and samples
questionnaires and mechanical devices
focus groups and online databases
online panels and experiments
personal interviews and online focus groups

What Are the Two Main Types of Research Instruments Used