An Introduction to Sample Selection Bias in Sociological Data¶
Berk, R. A. (1983). An Introduction to Sample Selection Bias in Sociological Data. American Sociological Review, 48(3), 386-398.
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Mechanisms¶
- Entry Funnel Abandonment Analysis
- Its central blind spot is survivorship bias: a funnel can only show you the people who entered it, so a step that looks fine at 90% conversion may be fine only among those not already filtered out upstream — and the people deterred before the first screen are perfectly invisible.
This sourceExplains that conclusions drawn from an observed sample apply only to units selected into that sample unless the selection process is addressed.
- Its central blind spot is survivorship bias: a funnel can only show you the people who entered it, so a step that looks fine at 90% conversion may be fine only among those not already filtered out upstream — and the people deterred before the first screen are perfectly invisible.
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Registry ID ref:29542a42e48f · see in the full table