Collecting Data
How data is collected
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Interviews
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Observations
The scientists use a lot of observations.
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Forms
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Questionnaires
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Surveys
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Cookies
It's widely used on the Internet.
Considerations
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How data will be collected
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Choose data sources
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First-party data: This is data collected by an individual or group using their own resources.
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Second-party data: The data collected by a group directly from its audience and then sold.
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Third-party data: The data collected from outside sources who did not collect it directly.
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Decide what data to use
If you needed an answer immediately, you'd have to use historical data, which is data that already exists.
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How much data to collect
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A population refers to all possible data values in a certain data set.
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A sample is a part of a population that is representative of the population.
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Select the right data type
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determine the time frame