A constant ratio between the rows of the correlation matrix indicates that there might be a model for the variation of the data
The six standardized test scores can be described as
Xi = aiF + ei, i = 1,…,6
where Xi is the ith standardized test score, ai is a constant, F is a “factor” value that has mean of 0 and variance of 1, and ei is the part of Xi that is specific to the ith test only
