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→Variables
* Target. Level. Is this variable something you want to improve, or a variable likely to affect those or just an intermediary background variable measured because it was easy and provided context?
* Target. Level. Is this variable something you want to improve, or a variable likely to affect those or just an intermediary background variable measured because it was easy and provided context?
* Similarity. Proxy. Is this variable measuring something very similar to what another variable is measuring. The most common example is [[Tools for heart rate or pulse|heart rate]] as many wearable measure it and the avid self tracker always has a few.
* Similarity. Proxy. Is this variable measuring something very similar to what another variable is measuring. The most common example is [[Tools for heart rate or pulse|heart rate]] as many wearable measure it and the avid self tracker always has a few.
* Sign. Positivity. If variable is a target, are higher values better or the opposite. Sometimes some middle value is best like with BMI.
* Scale and fact of [[Self assessment]]. Whether variable is anchored to objective standard or subjective or even relative to previous measurement. Also mention that it is self assessment.
* Is this target variable a measure of a problem, like pain, an accomplishment like playing guitar better, or both like a scale of cleverness in conversation?
==== Data Cleaning ====
==== Data Cleaning ====