Data having two or more variables per object.
Note: The measurements results are often of the same kind of quantity.
Examples: - Absorbances measured at \(\pu{101}\) wavelengths in the range \(\pu{200 nm}\) to \(\pu{400 nm}\).
- Mass fractions of \(\pu{10}\) elements measured by ICP-MS.
Source:
PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 411 (https://doi.org/10.1515/pac-2015-0605)