Displaying 4 results from an estimated 4 matches for "qdiptab".
Did you mean:
distab
2009 Jul 06
2
Hartigan's Dip test
Hi,
I just got a value for the dip test out of my data of 0.074 for a sample
size of 33. I'm trying to work out what this actually means though?
Could someone help me relate this to a p-value?
Thanks
James
2011 Dec 21
1
Diptest- I'm getting significant values when I shouldn't?
>From library(diptest):
Shouldn't the following almost always be non-significant for
Hartigan's dip test?
dip(x = rnorm(1000))
I get dip scores of around 0.0008 which based on p values taken from
the table (at N=1000), using the command: qDiptab, are 0.02 < p <
0.05.
Anyone familiar with Hartigan's dip test and what I may not be
understanding?
Thanks,
kbrownk
2004 Oct 22
1
p-values for the dip test
...is distributed approximately as
sqrt(100)*D*F(100) which has 90% point 0.474. Thus D*F(63) has 90% point
0.060. )"
It is the value of 0.474 that I am unable to get. Table 1 is a table of
percentage points for various sample sizes. The same table is provided in
the diptest package as 'qDiptab' (but at greater accuracy). n=63 is not
tabled but n=50 and 100 are. In the table for n=100 the value given for 90%
is 0.0471 so where does the 0.474 come from?
Any help appreciated!
Kylie.
[1] Hartigan JA & Hartigan PM. "The Dip Test of Unimodality", The Annals of
Statistics...
2009 Sep 01
1
Logistic Politomic Regression in R
...ty
To: j.sansom@niwa.co.nz
Cc: r-help@stat.math.ethz.ch
Message-ID: <Pine.LNX.4.64.0908310017460.8370@egon.stats.ucl.ac.uk>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Dear John,
you may check dip in package diptest, which tests unimodality vs.
multimuodality (you'll need qDiptab for that, too).
Apologies if this misses the point; I only saw the last responses but not
the original question so this may not be what you are after, or already
mentioned, but I decided that I risk making a fool of myself for a small
chance that it helps you.
Cheers,
Christian
On Mon, 31 Aug...