I need to report exact p-values in my dissertation. Looking at my lm()
results of many regressions with huge datasets I have the feeling that
p-values are rounded to the smallest value of 2e-16, because this p-value
is very common.
Is that true or just chance? If it is true, how do I obtain the
On 12.02.2013 13:37, Torvon wrote:
I need to report exact p-values in my dissertation. Looking at my lm()
results of many regressions with huge datasets I have the feeling that
p-values are rounded to the smallest value of 2e-16, because this p-value
is very common.
Is that true or just
Thank you, Uwe.
summary(m1) gives me p-value estimates of:
(Intercept) 2e-16
x1 6.9e-15
x2 1.9e-07
x3 2.7e-09
While coef(summary(m1))[,4] gives me:
(Intercept) 3.0e-23
x1 5.7e-13
x2 2.6e-07
x3 1.7e-17
While the first one confirms my suspicion (-23 instead of -16), the latter
one vary
Torvon torvon at gmail.com writes:
Thank you, Uwe.
summary(m1) gives me p-value estimates of:
(Intercept) 2e-16
x1 6.9e-15
x2 1.9e-07
x3 2.7e-09
While coef(summary(m1))[,4] gives me:
(Intercept) 3.0e-23
x1 5.7e-13
x2 2.6e-07
x3 1.7e-17
While the first one confirms my suspicion
On 12.02.2013 14:44, Torvon wrote:
Thank you, Uwe.
summary(m1) gives me p-value estimates of:
(Intercept) 2e-16
x1 6.9e-15
x2 1.9e-07
x3 2.7e-09
While coef(summary(m1))[,4] gives me:
(Intercept) 3.0e-23
x1 5.7e-13
x2 2.6e-07
x3 1.7e-17
While the first one confirms my suspicion (-23
The code is quite long because I am running a WLS regression instead of an
OLS regression (due to heteroscedasticity). First, I get mean structure,
then get mean/SD relationship, then improve the variance structure by using
weights proportional to 1/variance.
I am quite sure this is not relevant,
On 12.02.2013 15:15, Torvon wrote:
The code is quite long because I am running a WLS regression instead of an
OLS regression (due to heteroscedasticity). First, I get mean structure,
then get mean/SD relationship, then improve the variance structure by using
weights proportional to 1/variance.
I'm sorry, no clue how I did not see that. Thank you!
On 12 February 2013 15:21, Uwe Ligges lig...@statistik.tu-dortmund.dewrote:
On 12.02.2013 15:15, Torvon wrote:
The code is quite long because I am running a WLS regression instead of an
OLS regression (due to heteroscedasticity).
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