Principal component analysis (PCA) is a classical statistical
method. This linear transform has been widely used in data
analysis and compression. Principal component analysis is
based on the statistical representation of a random variable
[6].PCA involves the calculation of the Eigen value decomposition of a data covariance matrix or singular value
decomposition of a data matrix, usually after mean centring
the data for each attribute. It is the simplest of the true
eigenvector based multivariate analyses. Often, its operation
can be thought of as revealing the internal structure of the data
in a way which best explains the variance in the data.