Weighting - Wikipedia
https://en.wikipedia.org/wiki/WeightingIn broadcasting and audio equipment measurements 468-weighting is the preferred weighting to use because it was specifically devised to allow subjectively valid measurements on noise, rather than pure tones. It is often not realised that equal loudness curves, and hence A-weighting, really apply only to tones, as tests with noise bands show increased sensitivity in the 5 to 7 kHz region on noise compared to tones.
Weighted Grade Calculator
https://gpacalculator.io/weighted-grade-calculatorWhat are Weighted Grades? In both high school and college, classes typically employ a 'weighted' system where groups of similar assignments (homework, quizzes, tests, etc.) are worth varying amounts of your overall grade. What this means is that 10 points scored on a quiz is not always equal to 10 points scored on a homework assignment.