@incollection{, B67AFFF0EE343ED8225BE3B4B00C8116 , author={{MesferAlsubaie} and {Saudi Arabian Cultural Mission}}, journal={{Global Journal of Management and Business Research}}, journal={{GJMBR}}2249-45880975-585310.34257/GJMBR, address={Cambridge, United States}, publisher={Global Journals Organisation}165112 } @book{b0, , author={{ MarkBlaug }} , title={{Great Economists before Keynes}} Brighton , publisher={Wheatsheaf} , year={1986} } @book{b1, , title={{Economics: Principles in action}} , author={{ Arthur;Sullivan } and { Sheffrin } and { MSteven }} , year={2003} , publisher={Pearson Prentice Hall} 07458 57 , address={Upper Saddle River, New Jersey} } @incollection{b2, , title={{Illusions in Regression Analysis}} , author={{ JArmstrong } and { Scott }} , journal={{International Journal of Forecasting}} 28 689 , year={2012} } @book{b3, , author={{ DavidAFreedman }} , title={{Statistical Models: Theory and Practice}} , publisher={Cambridge University Press} , year={2009} 26 } @incollection{b4, , title={{Thirteen ways to look at the correlation coefficient}} , author={{ JLRodgers } and { WANicewander }} , journal={{The American Statistician}} 42 1 , year={1988} } @incollection{b5, , title={{EDF Statistics for Goodness of Fit and Some Comparisons}} , author={{ MAStephens }} , journal={{Journal of the American Statistical Association}} 69 347 , year={1974} , publisher={American Statistical Association} } @book{b6, , title={{Regression Modeling Strategies. With Applications to Linear Models, Logistic Regression, and Survival Analysis}} , author={{ FrankHarrell }} , year={2001} , note={Read book} } @book{b7, , title={{Econometric Theory}} , author={{ ArthurSGoldberger }} , year={1964} , publisher={John Wiley & Sons} , address={New York} } @book{b8, , title={{Managing E-Commerce in Business. Cape Town}} , author={{ BothaBothma } and { PeterGeldenhuys }} , year={2008} , address={South Africa; Juta} , note={Print} } @incollection{b9, , title={{The Business Impact of E-Commerce}} , author={{ RuchiMonga }} , journal={{Gian Jyoti E-Journal}} , year={2012} } @incollection{b10, , title={{}} , author={{ JeffJordan }} , booktitle={{jeff.a16z.com. Data Sources}} 12 , year={2014} } @book{b11, , title={{Households Income}} }