Human Growth and Development / Unit 1 HGD 0052 short lesson, about 20 seconds
Reliability and Validity
Captions available
The idea
Reliability is the consistency of a measure; validity is whether it measures what it is intended to measure. A measure can have one without the other.
In practice
A kitchen scale that reads two hundred grams heavy, every single time.
Where people slip
That scale is reliable and invalid. The misconception is that consistent measurement is accurate measurement.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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