stats:sigma doesnt exist in 3.2.3

I am trying to use a package that uses the package car which uses sigma in
the stats package, but apparently my version of the stats package doesn?t
contain the function sigma. How can I go about fixing this?



Thanks



Error : object ?sigma? is not exported by 'namespace:stats'

In addition: Warning messages:

1: package ?car? was built under R version 3.3.0

2: replacing previous import by ?stats::sigma? when loading ?pbkrtest?

Error: package or namespace load failed for ?car?





SessionInfo:

R version 3.2.3 (2015-12-10)

Platform: x86_64-w64-mingw32/x64 (64-bit)

Running under: Windows Server 2008 R2 x64 (build 7601) Service Pack 1



locale:

[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United
States.1252    LC_MONETARY=English_United States.1252

[4] LC_NUMERIC=C                           LC_TIME=English_United
States.1252



attached base packages:

[1] stats     graphics  grDevices utils     datasets  methods   base



other attached packages:

[1] JGR_1.7-16    iplots_1.1-7  JavaGD_0.6-1  rJava_0.9-8   ggplot2_2.0.0
png_0.1-7



loaded via a namespace (and not attached):

[1] Rcpp_0.12.3      splines_3.2.3    MASS_7.3-45      munsell_0.4.3
colorspace_1.2-6 lattice_0.20-33  minqa_1.2.4

  [8] plyr_1.8.3       tools_3.2.3      nnet_7.3-11      parallel_3.2.3
grid_3.2.3       gtable_0.1.2     nlme_3.1-124

[15] lme4_1.1-10      Matrix_1.2-3     nloptr_1.0.4     scales_0.3.0

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