[R] Different lm() Residuals Output

[Bert Gunter]

It's the print method that determines this.

See
stats:::print.summary.lm

and in particular the if clause beginning:

    if (rdf > 5L) {

R code is open source. Once you know what to look for, you can examine
it yourself.

-- Bert


On Mon, Jan 9, 2012 at 9:25 AM, Rich Shepard <rshepard at appl-ecosys.com> wrote:
>  All but one of the summaries of multiple linear regressions in this
> analysis set present the residuals by min, 1Q, median, 3Q, and max. Example:
>
> lm(formula = TDS ~ Cond + Ca + Cl + Mg + Na + SO4, data = snow.cast)
> Residuals:
>     Min       1Q   Median       3Q      Max -277.351  -32.551   -2.621
> 40.812  245.272
>
> The one that doesn't has only a small number of rows (23) and presents the
> results as:
>
> lm(formula = TDS ~ Cond + Ca + Cl + Mg + SO4, data = rnchH.cast)
> Residuals:
>      8       9      10      11      12      13      14      16      20  21
> -2.1926  3.2306 -3.9823 -4.0491  0.5284  1.9354  2.4798  0.8952 -3.0642
>  0.8781
>     22
>  3.3408
>
>  What might cause this difference?
>
> Rich
>
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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