Data matrix (multivariate statistics)
Encyclopedia
In multivariate statistics
, a data matrix is a mathematical matrix
of data
whose rows represent different repetition of an experiment, and whose columns represent different types of datum (say, the results from a particular probe). For example, suppose an experiment is run where 10 people are pulled off the street and asked four questions. The data matrix M would be a 10x4 matrix. The datum in row i and column j of this matrix would be the answer of the i-th person to the j-th question.
Multivariate statistics
Multivariate statistics is a form of statistics encompassing the simultaneous observation and analysis of more than one statistical variable. The application of multivariate statistics is multivariate analysis...
, a data matrix is a mathematical matrix
Matrix (mathematics)
In mathematics, a matrix is a rectangular array of numbers, symbols, or expressions. The individual items in a matrix are called its elements or entries. An example of a matrix with six elements isMatrices of the same size can be added or subtracted element by element...
of data
Data
The term data refers to qualitative or quantitative attributes of a variable or set of variables. Data are typically the results of measurements and can be the basis of graphs, images, or observations of a set of variables. Data are often viewed as the lowest level of abstraction from which...
whose rows represent different repetition of an experiment, and whose columns represent different types of datum (say, the results from a particular probe). For example, suppose an experiment is run where 10 people are pulled off the street and asked four questions. The data matrix M would be a 10x4 matrix. The datum in row i and column j of this matrix would be the answer of the i-th person to the j-th question.