From: Mary Stevens <marystev@gmail.com>
Date: June 15, 2010 11:54:05 AM GMT+02:00
To: Jonathan Harrington <jmh@phonetik.uni-muenchen.de>
Subject: Re: Statistik in R course

Hi Jonathan

I would love these data to be analysed! They're just my duration measurements of /VC:/ in isolated words from the CLIPS corpus. 15 cities, ~8 speakers, 7 Italian words (giving 8 VC: tokens because "specchietto" has 2). Each observation is a different speaker.

My questions are
(a) what factors (vowel type, C place, post-tonic, region, city) have a significant effect on the frequency of preaspiration (no preaspiration = 0 in preDur column)? And on the duration of preaspiration?
(b) what is the impact of preaspiration on duration of surrounding segments (VDur, cloDur, RelDur) and summed segments (cloRel, VC). That is, are they signficantly longer/shorter when preaspiration occurs than when preDur=0. 
(c) compare the C/V ratio values between North Central and Southern regions. Are they significantly different between regions? Here there need to be two separate groups for each region: tokens where preDur=0 and tokens where preaspiraiton occurs) 

I'd appreciate answers to any or all of these questions. Only trouble is that it's an excel file. Is this OK? 

¬

The columns are as follows
filename
city: (= e.g. Bari)
Region (= N S C; for northern, central or southern Italy)
VDur= vowel duration
preDur= preaspiration duration
cloDur= closure duraiton
RelDur=release duration
CloRel= closure + release duration
PreCloRel=preaspiration+closure+release duraiton
VC= V+preaspiration+closure+release duration
C/V= (preaspiration+closure+release/vowel) 
Vtype = a e i o u
Cplace= pp tt kk
post-tonic= N Y; whether preceding vowel has lexical stress or not)

If the excel file is a problem i also have it all loaded the data into R/Emu, i just don't have all the factors clearly accessible in that format yet.

Thanks, and please let me know if this is too messy
Mary

On 15/06/2010, at 8:57 AM, Jonathan Harrington wrote:

Hallo IPS,

towards the end of the summer undergraduate course in statistics
that I run here in Munich, we usually
try to apply the range of techniques we have
learned to real data (rather to the mostly
simulated examples on which the course is based).

So if you have some data you would like analysed
statistically (or if you have
some data that you have already analysed and maybe
published somewhere) and would like the
group to run whatever statistical tests over it
that they think appropriate, then please send
me an email with the data.

The data itself should preferably be in the form
of ASCII text with multiple columns
in which the rows
are observations and the columns the variables.
You would then simply need to provide the question
that you would like answered of the data (and perhaps
a brief explanation of what the columns are).

We may be able to begin analyses of this kind from
about 2 weeks from now -- so any datasets you
have lying around that need a statistical analysis
would be much appreciated!

(We will then try to return to you the results
of the statistical analysis and significance tests
before the end of the semester).

thanks and best wishes,

Jonathan