Being Unbiased When Base Includes Individuals Unwilling to Share Personally Identifiable Information

Lets say we want to perform a survey. It is on a politically sensitive topic. 75% of the people (made that up out of thin air) are willing to share some personally identifiable information (PII) if they know it is anonymized (e.g. no easy way for their feedback to be tracked back to them). But […]

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