Pedro Arantesrose
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Proxy Variable

A proxy variable is a measurable variable that isn't directly relevant but is used in place of another unobservable or immeasurable variable.
#proxy
Zettelkasten, June 23, 2021 (changes)

Notes

  • A proxy variable is a measurable variable that isn't directly relevant but is used in place of another unobservable or immeasurable variable.

  • Proxy variables interact with other proxy variables.

    • It's dangerous focusing only on one proxy variable.
    • To work with multiple proxy variables, you must express them in the same unit of measure.
  • A good proxy variable must have a closer correlation with the variable of interest.

  • Examples:

    • Proxy variable per-capita GDP measures standard of living or quality of life.
    • Changes in height over a fixed time are a proxy for hormone levels in the blood.
    • Slack can be used to represent an economic impact on a project.

Questions

  • What are other types of proxy variables?

References

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