Here's a link to a website that has an example http://www.itl.nist.gov/div898/handbook/pmc/section5/pmc541.htm
and another example for understanding covariance and variance http://www.visualstatistics.net/Visual%20Statistics%20Multimedia/covariance.htm
variance - covariance - how to calculate and its uses
Explain BCG Matrix?
Explain the Matrix approach to product planning. Suggest a Marketing strategy on the basis of the product evaluation matrix.
explain bus incidence matrix.
Zero Matrix When all elements of a matrix are zero than the matrix is called zero matrix. Example: A=|0 0 0|
The identity matrix, which is a square matrix with zeros everywhere except on the principal diagonal where they are all ones.
look in a maths dictionary
what does mean consistence of matrix and uniqueness of it? how we can find it? please support with example
Many things do but the best example is bone with a matrix made mostly of calcium.
a matrix
For example, if you have [ -4 1 0 3] as your matrix, it would be negative 4. Whatever negative number is in your matrix is your answer.
In the context of matrix algebra there are more operations that one can perform on a square matrix. For example you can talk about the inverse of a square matrix (or at least some square matrices) but not for non-square matrices.