I am using a nested model in R and the lm output shows 47 not defined
because of singularities and I have no idea why. Any help on why this is
happening or how to fix this problem would be very much appreciated. Below
is the output I received from R.
Thanks and happy holidays!
Call:
lm(formula = Dist ~ Treatment/SiteL/Territory)
Residuals:
Min 1Q Median 3Q Max
-6.646 -1.443 0.080 1.440 5.613
Coefficients: (47 not defined because of singularities)
Estimate Std. Error t value
Pr(>|t|)
(Intercept) 9.47000 1.24231 7.623 9.48e-13
***
TreatmentReference -4.05500 1.75689 -2.308 0.02201
*
TreatmentSingle Tree -2.43000 2.15175 -1.129
0.26010
TreatmentTypical -2.03571 1.55732 -1.307
0.19263
TreatmentIntensive:SiteLB -2.25571 1.55732 -1.448
0.14904
TreatmentReference:SiteLB -2.25333 1.60382 -1.405
0.16156
TreatmentSingle Tree:SiteLB 0.43286 1.99213 0.217
0.82821
TreatmentTypical:SiteLB 0.64371 1.45484 0.442
0.65863
TreatmentIntensive:SiteLC -3.89000 2.15175 -1.808 0.07212
.
TreatmentReference:SiteLC 0.91300 1.66673 0.548
0.58445
TreatmentSingle Tree:SiteLC -1.59800 2.07878 -0.769
0.44296
TreatmentTypical:SiteLC 0.10000 1.32809 0.075
0.94005
TreatmentIntensive:SiteLA:TerritoryQ -3.94000 1.75689 -2.243 0.02601
*
TreatmentReference:SiteLA:TerritoryQ -1.61700 1.66673 -0.970
0.33313
TreatmentSingle Tree:SiteLA:TerritoryQ 0.01000 2.15175 0.005
0.99630
TreatmentTypical:SiteLA:TerritoryQ NA NA NA
NA
TreatmentIntensive:SiteLB:TerritoryQ NA NA NA
NA
TreatmentReference:SiteLB:TerritoryQ 1.59691 1.38232 1.155
0.24936
TreatmentSingle Tree:SiteLB:TerritoryQ -1.15286 1.32809 -0.868
0.38639
TreatmentTypical:SiteLB:TerritoryQ NA NA NA
NA
TreatmentIntensive:SiteLC:TerritoryQ NA NA NA
NA
TreatmentReference:SiteLC:TerritoryQ 0.74200 1.81451 0.409
0.68303
TreatmentSingle Tree:SiteLC:TerritoryQ 2.32967 1.32254 1.762 0.07967
.
TreatmentTypical:SiteLC:TerritoryQ -0.37000 1.32809 -0.279
0.78084
TreatmentIntensive:SiteLA:TerritoryR NA NA NA
NA
TreatmentReference:SiteLA:TerritoryR 3.37500 1.66673 2.025 0.04419
*
TreatmentSingle Tree:SiteLA:TerritoryR NA NA NA
NA
TreatmentTypical:SiteLA:TerritoryR NA NA NA
NA
TreatmentIntensive:SiteLB:TerritoryR NA NA NA
NA
TreatmentReference:SiteLB:TerritoryR NA NA NA
NA
TreatmentSingle Tree:SiteLB:TerritoryR NA NA NA
NA
TreatmentTypical:SiteLB:TerritoryR NA NA NA
NA
TreatmentIntensive:SiteLC:TerritoryR NA NA NA
NA
TreatmentReference:SiteLC:TerritoryR NA NA NA
NA
TreatmentSingle Tree:SiteLC:TerritoryR NA NA NA
NA
TreatmentTypical:SiteLC:TerritoryR NA NA NA
NA
TreatmentIntensive:SiteLA:TerritoryT NA NA NA
NA
TreatmentReference:SiteLA:TerritoryT 1.92100 1.66673 1.153
0.25046
TreatmentSingle Tree:SiteLA:TerritoryT NA NA NA
NA
TreatmentTypical:SiteLA:TerritoryT NA NA NA
NA
TreatmentIntensive:SiteLB:TerritoryT NA NA NA
NA
TreatmentReference:SiteLB:TerritoryT NA NA NA
NA
TreatmentSingle Tree:SiteLB:TerritoryT NA NA NA
NA
TreatmentTypical:SiteLB:TerritoryT NA NA NA
NA
TreatmentIntensive:SiteLC:TerritoryT NA NA NA
NA
TreatmentReference:SiteLC:TerritoryT NA NA NA
NA
TreatmentSingle Tree:SiteLC:TerritoryT NA NA NA
NA
TreatmentTypical:SiteLC:TerritoryT NA NA NA
NA
TreatmentIntensive:SiteLA:TerritoryW -3.38500 1.75689 -1.927 0.05542
.
TreatmentReference:SiteLA:TerritoryW -0.28500 1.89766 -0.150
0.88077
TreatmentSingle Tree:SiteLA:TerritoryW -0.23500 1.96426 -0.120
0.90489
TreatmentTypical:SiteLA:TerritoryW NA NA NA
NA
TreatmentIntensive:SiteLB:TerritoryW NA NA NA
NA
TreatmentReference:SiteLB:TerritoryW NA NA NA
NA
TreatmentSingle Tree:SiteLB:TerritoryW NA NA NA
NA
TreatmentTypical:SiteLB:TerritoryW NA NA NA
NA
TreatmentIntensive:SiteLC:TerritoryW NA NA NA
NA
TreatmentReference:SiteLC:TerritoryW NA NA NA
NA
TreatmentSingle Tree:SiteLC:TerritoryW 3.33633 1.50451 2.218 0.02770
*
TreatmentTypical:SiteLC:TerritoryW 0.28571 1.99213 0.143
0.88610
TreatmentIntensive:SiteLA:TerritoryX -3.17000 1.75689 -1.804 0.07267
.
TreatmentReference:SiteLA:TerritoryX 2.08389 1.49307 1.396
0.16434
TreatmentSingle Tree:SiteLA:TerritoryX -0.16750 2.15175 -0.078
0.93803
TreatmentTypical:SiteLA:TerritoryX 0.81821 1.55732 0.525
0.59988
TreatmentIntensive:SiteLB:TerritoryX NA NA NA
NA
TreatmentReference:SiteLB:TerritoryX 0.31333 1.60382 0.195
0.84530
TreatmentSingle Tree:SiteLB:TerritoryX -0.06536 1.55732 -0.042
0.96657
TreatmentTypical:SiteLB:TerritoryX -0.57086 1.45484 -0.392
0.69519
TreatmentIntensive:SiteLC:TerritoryX 4.01800 2.07878 1.933 0.05465
.
TreatmentReference:SiteLC:TerritoryX -0.25086 1.45484 -0.172
0.86327
TreatmentSingle Tree:SiteLC:TerritoryX 6.72400 1.57141 4.279 2.90e-05
***
TreatmentTypical:SiteLC:TerritoryX -0.83429 1.55732 -0.536
0.59274
TreatmentIntensive:SiteLA:TerritoryY -0.62857 1.55732 -0.404
0.68692
TreatmentReference:SiteLA:TerritoryY -0.87833 1.89766 -0.463
0.64397
TreatmentSingle Tree:SiteLA:TerritoryY -0.77200 2.07878 -0.371
0.71075
TreatmentTypical:SiteLA:TerritoryY NA NA NA
NA
TreatmentIntensive:SiteLB:TerritoryY NA NA NA
NA
TreatmentReference:SiteLB:TerritoryY 2.50583 1.60382 1.562
0.11975
TreatmentSingle Tree:SiteLB:TerritoryY 0.70048 1.38232 0.507
0.61289
TreatmentTypical:SiteLB:TerritoryY -4.80133 1.81451 -2.646 0.00878
**
TreatmentIntensive:SiteLC:TerritoryY NA NA NA
NA
TreatmentReference:SiteLC:TerritoryY 0.00700 1.66673 0.004
0.99665
TreatmentSingle Tree:SiteLC:TerritoryY 1.61300 2.07878 0.776
0.43870
TreatmentTypical:SiteLC:TerritoryY -3.03929 1.55732 -1.952 0.05237
.
TreatmentIntensive:SiteLA:TerritoryZ NA NA NA
NA
TreatmentReference:SiteLA:TerritoryZ 3.84071 1.55732 2.466 0.01449
*
TreatmentSingle Tree:SiteLA:TerritoryZ 0.12667 2.02868 0.062
0.95028
TreatmentTypical:SiteLA:TerritoryZ NA NA NA
NA
TreatmentIntensive:SiteLB:TerritoryZ NA NA NA
NA
TreatmentReference:SiteLB:TerritoryZ NA NA NA
NA
TreatmentSingle Tree:SiteLB:TerritoryZ NA NA NA
NA
TreatmentTypical:SiteLB:TerritoryZ NA NA NA
NA
TreatmentIntensive:SiteLC:TerritoryZ NA NA NA
NA
TreatmentReference:SiteLC:TerritoryZ NA NA NA
NA
TreatmentSingle Tree:SiteLC:TerritoryZ NA NA NA
NA
TreatmentTypical:SiteLC:TerritoryZ NA NA NA
NA
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 2.485 on 202 degrees of freedom
Multiple R-squared: 0.3625, Adjusted R-squared: 0.211
F-statistic: 2.393 on 48 and 202 DF, p-value: 1.317e-05
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On Dec 24, 2011, at 12:07 PM, Kristen Mancuso wrote:> I am using a nested model in R and the lm output shows 47 not defined > because of singularities and I have no idea why. Any help on why > this is > happening or how to fix this problem would be very much > appreciated. Below > is the output I received from R.> not defined because of singularitiesThis question should be a FAQ if it's not already: http://lmgtfy.com/?q=%22not+defined+because+of+singularities%22 -- David Winsemius, MD West Hartford, CT