Data
Measurements, Units
Units
Base units are liter, kilo, cm, etc.
There is also King Henry Died By Drinking Chocolate Milk. That stands for Kilo, Hecto, Deka, Base, Deci, Cem, Millo.
Base is the main unit.
Precision v. Accuracy
Qualitative is measuring something by quality.
Quantitative is measuring something by quantity.
Precision is being exact or accurate.
Accuracy is being correct or precise.