Measure of influence based on the fact that influential observations in either the response variable or in the predictors or both.

ols_hadi(model)

Arguments

model

An object of class lm.

Value

Hadi's measure of the model.

References

Chatterjee, Samprit and Hadi, Ali. Regression Analysis by Example. 5th ed. N.p.: John Wiley & Sons, 2012. Print.

See also

Other influence measures: ols_leverage, ols_pred_rsq, ols_press

Examples

model <- lm(mpg ~ disp + hp + wt, data = mtcars) ols_hadi(model)
#> $hadi #> Mazda RX4 Mazda RX4 Wag Datsun 710 Hornet 4 Drive #> 0.19318654 0.10375645 0.20740884 0.09775893 #> Hornet Sportabout Valiant Duster 360 Merc 240D #> 0.20724815 0.19946745 0.19652103 0.19692137 #> Merc 230 Merc 280 Merc 280C Merc 450SE #> 0.12314263 0.14455206 0.24742810 0.10784806 #> Merc 450SL Merc 450SLC Cadillac Fleetwood Lincoln Continental #> 0.05027013 0.11471138 0.25914561 0.29265274 #> Chrysler Imperial Fiat 128 Honda Civic Toyota Corolla #> 1.14426624 0.99609055 0.20171955 1.06239341 #> Toyota Corona Dodge Challenger AMC Javelin Camaro Z28 #> 0.28064340 0.35373215 0.44820010 0.15099700 #> Pontiac Firebird Fiat X1-9 Porsche 914-2 Lotus Europa #> 0.41281074 0.10477548 0.08003177 0.37633639 #> Ford Pantera L Ferrari Dino Maserati Bora Volvo 142E #> 0.32631790 0.19910073 1.19634000 0.14496664 #> #> $potential #> [1] 0.04642961 0.04793496 0.06734998 0.09700248 0.20204116 0.07204021 #> [7] 0.15814866 0.14431329 0.10998283 0.12811895 0.12811895 0.09886225 #> [13] 0.04904646 0.05345386 0.25898633 0.26443008 0.23883499 0.09118421 #> [19] 0.17116856 0.11159933 0.06050321 0.10075604 0.08338035 0.11503917 #> [25] 0.24318619 0.10245226 0.08001939 0.19678226 0.31299327 0.15926270 #> [31] 0.99626944 0.08504229 #> #> $residual #> Mazda RX4 Mazda RX4 Wag Datsun 710 Hornet 4 Drive #> 0.1467569282 0.0558214978 0.1400588567 0.0007564513 #> Hornet Sportabout Valiant Duster 360 Merc 240D #> 0.0052069911 0.1274272438 0.0383723684 0.0526080784 #> Merc 230 Merc 280 Merc 280C Merc 450SE #> 0.0131598054 0.0164331043 0.1193091514 0.0089858122 #> Merc 450SL Merc 450SLC Cadillac Fleetwood Lincoln Continental #> 0.0012236671 0.0612575182 0.0001592827 0.0282226574 #> Chrysler Imperial Fiat 128 Honda Civic Toyota Corolla #> 0.9054312452 0.9049063421 0.0305509895 0.9507940779 #> Toyota Corona Dodge Challenger AMC Javelin Camaro Z28 #> 0.2201401850 0.2529761045 0.3648197429 0.0359578331 #> Pontiac Firebird Fiat X1-9 Porsche 914-2 Lotus Europa #> 0.1696245441 0.0023232180 0.0000123722 0.1795541315 #> Ford Pantera L Ferrari Dino Maserati Bora Volvo 142E #> 0.0133246374 0.0398380292 0.2000705631 0.0599243499 #>