Specify an integer between 1 and the total number of principal components . Principal components with an index larger than this number are not included in the variance components modeling.When this parameter is not set to 0 , the number of displayed principal components is determined either by the value specified for this parameter, or the result of a calculation involving the Cumulative Proportion of Variation to Explain with Principal Components , whichever is smaller.Note : This parameter is enabled only when the Correlation and Principal Variance Components Analysis box is checked.