Question: Table B. 14 contains data concerning the transient points of an electronic inverter. Fit a regression model to all 25 observations but only use (x_{1}-x_{4})

Table B. 14 contains data concerning the transient points of an electronic inverter. Fit a regression model to all 25 observations but only use $x_{1}-x_{4}$ as the regressors. Investigate this model for influential observations and comment on your findings.

Observation Number x x2 X3 Xs y 1234567KUNS 2321 53428833842232232688 822561 38348986463833AELDE593623

Observation Number x x2 X3 Xs y 1234567KUNS 2321 53428833842232232688 822561 38348986463833AELDE593623 0.787 8 0 0.293 6 0 1.710 0.203 6 D 0.806 0.806 4.713 4.713 0.607 0.607 9.107 9.107 9.210 1.365 4.554 0.295 0.293 2.252 2333333 9.167 9.107 0.694 0.379 0.485 0.400 3.34.3 3.345 0.208 0.400 0.201 0.201 6 33 3246 0.329 4.966 1.362 1.515 0.751

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