2.9. Based on price statistics of 26 properties sold (Y USD/m? ) linear correlation coefficients were calculated with potential explanatory variables X,,X2,X3, X4 . Vector R, and matrix R are listed...

Extracted text: 2.9. Based on price statistics of 26 properties sold (Y USD/m? ) linear correlation coefficients were calculated with potential explanatory variables X,,X2,X3, X4 . Vector R, and matrix R are listed below 0,3 0,6 0,5 1 Ro= R = -0,7 0,6 0,6 1 0,4 0,8 0,8 0,7 1] The critical value of the linear correlation coefficient was assumed to be r* =0, 55. Perform the selection of explanatory variables for the model using the correlation coefficient analysis method.