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Analysis of Linear Regression Model at Divided System Matrix
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In this study problems connected with the detection of influential observations
are investigated in the linear regression model using the least squares estimation of structural
parameters. This issue has been presented ...
Matrix H and Its Applications in Economic and Tourist Research
(Wydawnictwo Uniwersytetu Łódzkiego, 2006)
The paper characterizes and gives some basic properties of matrix H that is the
operator of orthogonal projection on the space of columns of matrix X, which is the hat
matrix in linear regression model. The author ...