The phrase "a sample matrix" is correct and usable in written English.
It can be used in contexts such as research, data analysis, or any situation where a matrix is being referenced as an example or representation of data.
Example: "In our study, we used a sample matrix to illustrate the relationship between the variables."
Alternatives: "an example matrix" or "a test matrix".
Nevertheless, by hiding an identification code in a sample matrix on the answer sheet, Dr Gino and Dr Mogilner knew which matrix sheet each candidate had been given and thus who had cheated and who had not.
This makes it possible to determine the trivalent ion in a sample matrix containing monovalent and divalent cations.
A channel-coupled microchip electrophoresis device was designed to clean up alkaline metal ions from a sample matrix for the chiral analysis of amine.
The sample preparation step in an analytical process typically consists of the extraction of components of interest from a sample matrix.
At present, considerable attention is being paid to solid-phase extraction [SPE] as a way to isolate and preconcentrate desired components from a sample matrix.
That is, with a sample matrix of the (660,007 (times) 13 -dimension from the given problem, the amount of data exceeds the processing capacity of the traditional Apriori and Eclat techniques using a single machine, which leads to significant computational cost and extensive memory requirements.
As a sample matrixes are highly variable and difficult to define exactly, optimisation of DNA isolation procedures for each matrix is impossible.
Potential participants were allocated to a sampling matrix and a quota randomly sampled from each cell.
Purposive sampling via a sampling matrix will recruit participants with different experiences of delivering OPAT services.
Breast milk has several advantages as a sampling matrix: It is simple and noninvasive, with samples collected by the mother.
A sampling matrix for 10 weeks was created and the nursing care activities were observed 7 days a week for two day shifts (08.00-16.00).
