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<STRONG>SIGNOFF SPSSX-L</STRONG> <br /><hr />Windows
Live=99: Keep your lif=
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out.</a></body>
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--_247523ec-db34-4ffb-9951-7b6ec21f5655_--
------------------------------
Date: Mon, 11 May 2009 14:10:46 -0600
From: =?ISO-8859-1?Q?Rodrigo_Brice=F1o?= <rbriceno@sanigest.com>
Subject: about transposing-help
This is a multi-part message in MIME format.
--------------060801060106020008030509
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Dear SPSS listers. I have a database with information about expenditure
on a list of 45 products.
An identifier for each household is also provided.
The original format of my database is to have for example 45 rows for
the first household that have reported consume on each of the 45
products, however the number of products consumed by households could
vary between 1 and 45, and consequently varying number of rows.
The variables in my dataset are:
id: HH identifier
R802A: product name identifier
R805A: expenditure made in the product
What I need is to have each product as a column and each identifier as a
row. I was trying to use the restructuring function, but some errors
appeared: "The INDEX values for case 27964 have occurred before in the
cases with the same ID values."
I also made a new empty database where I put ID in rows (so each line is
a HH) and 45 columns (where each column is a product) but the missing
part is how to put on each corresponding cell the expenditure made on
each product. I was trying some kind of merge, but I have no idea about
how to establish the filters to do it.
Any idea about how can I overcome this issue?
Thanks!
--
__________________________________________________________________
*Rodrigo Briceño*
Project Manager
Sanigest Internacional
+506 22-91-12-00 ext. 113 * Oficina* *Costa Rica*
+506 22-32-08-30 *Fax
*_rbriceno@sanigest.com_ <mailto:mail@sanigest.com>
_www.sanigest.com_ <http://www.sanigest.com/>
MSN: _jbric98@hotmail.com_ <mailto:jbric98@hotmail.com>
SKYPE: rbriceno1087
_____________________
This communication contains legal information which is privileged and
confidential. It is for the exclusive use of the address and
distribution, dissemination, copying or use by others is strictly
prohibited. If you have received this communication by error, please
delete the original message and e-mail us.
Esta comunicación contiene información legal privilegiada y confidencial
para el uso exclusivo del destinatario. La distribución, diseminación,
copia u otro uso por terceras personas es estrictamente prohibida. Si
usted ha recibido esta comunicación por error, le rogamos borrar el
mensaje original y comunicárnoslo a esta misma dirección.
--------------060801060106020008030509
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Dear SPSS listers. I have a database with information about expenditure
on a list of 45 products.<br>
An identifier for each household is also provided.<br>
The original format of my database is to have for example 45 rows for
the first household that have reported consume on each of the 45
products, however the number of products consumed by households could
vary between 1 and 45, and consequently varying number of rows.<br>
<br>
The variables in my dataset are: <br>
id: HH identifier<br>
R802A: product name identifier<br>
R805A: expenditure made in the product<br>
<br>
What I need is to have each product as a column and each identifier as
a row. I was trying to use the restructuring function, but some errors
appeared: "The INDEX values for case 27964 have occurred before in the
cases with the same ID values."<br>
<br>
I also made a new empty database where I put ID in rows (so each line
is a HH) and 45 columns (where each column is a product) but the
missing part is how to put on each corresponding cell the expenditure
made on each product. I was trying some kind of merge, but I have no
idea about how to establish the filters to do it.<br>
<br>
Any idea about how can I overcome this issue?<br>
<br>
Thanks!<br>
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<p class="MsoNormal" style=""><span
style="font-size: 10pt; color: rgb(153, 204, 255);"
lang="PT-BR">__________________________________________________________________</span><span
style=""
lang="PT-BR"><u1:p></u1:p><o:p></o:p></span></p>
<p class="MsoNormal" style=""><b><span
style="font-size: 10pt; font-family: "Book
Antiqua";" lang="PT-BR">Rodrigo
Briceño</span></b><span
style="font-size: 10pt; font-family: "Book Antiqua";
color: rgb(153, 204, 255);"
lang="PT-BR"><br>
</span><span style="font-size: 10pt; font-family: "Book
Antiqua";"
lang="PT-BR">Project Manager<br>
Sanigest Internacional</span><span style=""
lang="PT-BR"><u1:p></u1:p><o:p></o:p></span></p>
<p class="MsoNormal" style=""><span
style="font-size: 10pt; font-family: "Book
Antiqua";">+506<span
class="GramE">
22</span>-91-12-00 ext. 113 <b> <span
class="SpellE">Oficina</span></b>
<st1:place u2:st="on"><st1:country-region
u2:st="on"><b>Costa
Rica</b></st1:country-region></st1:place><br>
+506
22-32-08-30
<b>Fax<br>
</b></span><a href="mailto:mail@sanigest.com"
title="blocked::mailto:mail@sanigest.com"><u><span
style="font-size: 10pt; font-family:
Sylfaen;">rbriceno@sanigest.com</span></u></a><span
style="font-size: 10pt; font-family: Sylfaen; color: rgb(153, 204,
255);"><br>
</span><a href="http://www.sanigest.com/"
title="blocked::http://www.sanigest.com/"><u><span
style="font-size: 10pt; font-family:
Sylfaen;">www.sanigest.com</span></u></a><span
style="font-size: 10pt; font-family: Sylfaen; color: rgb(153, 204,
255);"><br>
</span><span
style="font-size: 10pt; font-family: "Book Antiqua";
color: navy;"><br>
MSN: </span><a href="mailto:jbric98@hotmail.com"
title="blocked::mailto:jbric98@hotmail.com
mailto:jbric98@hotmail.com"><u><span
style="font-size: 10pt; font-family: "Book
Antiqua";">jbric98@hotmail.com</span></u></a><span
style="font-size: 10pt; font-family: "Book Antiqua";
color: navy;"><br>
SKYPE: rbriceno1087</span></p>
<p class="MsoNormal" style=""><span
style="font-size: 10pt; color: rgb(153, 204,
255);">_____________________</span></p>
<p class="MsoNormal" style="text-align:
justify;"><span
style="font-size: 8pt; font-family: "Book
Antiqua";">This
communication contains legal information which is privileged and
confidential.
It is for the exclusive use of the address and distribution,
dissemination,
copying or use by others is strictly prohibited. If you have received
this
communication by error, please delete the original message and e-mail
us.</span></p>
<p class="MsoNormal" style="text-align:
justify;"><span
style="font-size: 8pt; font-family: "Book Antiqua";
color: rgb(153, 204, 255);"
lang="ES-CR"><br>
</span><span style="font-size: 8pt; font-family: "Book
Antiqua";"
lang="ES-CR">Esta comunicación contiene
información
legal privilegiada y confidencial para el uso exclusivo del
destinatario. La
distribución, diseminación, copia u otro uso por terceras
personas es estrictamente prohibida. Si usted ha recibido esta
comunicación por error, le rogamos borrar el mensaje original y
comunicárnoslo a esta misma
dirección.</span><span style=""
lang="ES-CR"><u1:p></u1:p><o:p></o:p></span></p>
</div>
</div>
</body>
</html>
--------------060801060106020008030509--
------------------------------
Date: Mon, 11 May 2009 16:30:22 -0400
From: Gene Maguin <emaguin@buffalo.edu>
Subject: V16 Examine procedure
I'm curious. Are there known problems with the examine procedure when
multiple dvs are listed, no factors and pairwise missing?
I think there is. Specifically, the box plots seem to be incorrect (and or
incorrectly labeled using the id options). I'm not sure which. Or the names
are incorrect. I'm not quite sure.
Switching back to nameing just one dv seems to fix the problem.
Also, and maybe this has always been true, the plots show variable labels
but not variable NAME.
Gene Maguin
------------------------------
Date: Mon, 11 May 2009 18:58:15 -0500
From: Ariel Barak <abarakabarak@gmail.com>
Subject: Re: about transposing-help
--00504502d07c6cdc510469abc081
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Hi Rodrigo,
You are on the right track with looking to restructure the data. The error
you're describing is likely because you have two rows that are identical by
what you want the identifying variables to be, likely the HH identifier and
the produce name identifier.
For example, if you have two rows like this, you will get the error:
HH R802A R805A
0001 521 200
0001 521 125
So, the same family may have bought the same product twice and in your
database, you have it as two rows. If you aggregate the data and break by
HH, R802A, and then take the sum of R805A, you should then be able to
restructure your data without the error(s) you observed. You want the row t=
o
look like:
HH R802A R805A_sum
0001 521 325
You could post a few lines of your data or some dummy data and what you'd
like the result to look like and the list may be able to give you a more
concrete solution.
Thanks,
Ariel
On Mon, May 11, 2009 at 3:10 PM, Rodrigo Brice=F1o
<rbriceno@sanigest.com>w=
rote:
> Dear SPSS listers. I have a database with information about expenditure =
on
> a list of 45 products.
> An identifier for each household is also provided.
> The original format of my database is to have for example 45 rows for the
> first household that have reported consume on each of the 45 products,
> however the number of products consumed by households could vary between =
1
> and 45, and consequently varying number of rows.
>
> The variables in my dataset are:
> id: HH identifier
> R802A: product name identifier
> R805A: expenditure made in the product
>
> What I need is to have each product as a column and each identifier as a
> row. I was trying to use the restructuring function, but some errors
> appeared: "The INDEX values for case 27964 have occurred before in
the ca=
ses
> with the same ID values."
>
> I also made a new empty database where I put ID in rows (so each line is =
a
> HH) and 45 columns (where each column is a product) but the missing part =
is
> how to put on each corresponding cell the expenditure made on each produc=
t.
> I was trying some kind of merge, but I have no idea about how to establis=
h
> the filters to do it.
>
> Any idea about how can I overcome this issue?
>
> Thanks!
> --
>
> __________________________________________________________________
>
> *Rodrigo Brice=F1o*
> Project Manager
> Sanigest Internacional
>
> +506 22-91-12-00 ext. 113 * Oficina* *Costa Rica*
> +506 22-32-08-30 *Fax
> **rbriceno@sanigest.com* <mail@sanigest.com>
> *www.sanigest.com* <http://www.sanigest.com/>
>
> MSN: *jbric98@hotmail.com* <jbric98@hotmail.com>
> SKYPE: rbriceno1087
>
> _____________________
>
> This communication contains legal information which is privileged and
> confidential. It is for the exclusive use of the address and distribution=
,
> dissemination, copying or use by others is strictly prohibited. If you ha=
ve
> received this communication by error, please delete the original message =
and
> e-mail us.
>
>
> Esta comunicaci=F3n contiene informaci=F3n legal privilegiada y confidenc=
ial
> para el uso exclusivo del destinatario. La distribuci=F3n, diseminaci=F3n=
, copia
> u otro uso por terceras personas es estrictamente prohibida. Si usted ha
> recibido esta comunicaci=F3n por error, le rogamos borrar el mensaje orig=
inal
> y comunic=E1rnoslo a esta misma direcci=F3n.
>
--00504502d07c6cdc510469abc081
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Hi Rodrigo,<br><br>You are on the right track with looking to
restructure t=
he data. The error you're describing is likely because you have two
row=
s that are identical by what you want the identifying variables to be, like=
ly the HH identifier and the produce name identifier.<br>
<br>For example, if you have two rows like this, you will get the
error:<br=
><br>HH=A0=A0=A0 R802A=A0 R805A<br>0001=A0 521=A0=A0=A0=A0=A0
200<br>0001=
=A0 521=A0=A0=A0=A0=A0 125<br><br>So, the same family may have
bought the s=
ame product twice and in your database, you have it as two rows. If you agg=
regate the data and break by HH, R802A, and then take the sum of R805A, you=
should then be able to restructure your data without the error(s) you obse=
rved. You want the row to look like:<br>
<br>HH=A0=A0=A0 R802A=A0 R805A_sum<br>
0001=A0 521=A0=A0=A0=A0=A0 325<br><br>You could post a few lines of
your da=
ta or some dummy data and what you'd like the result to look like and
t=
he list may be able to give you a more concrete
solution.<br><br>Thanks,<br=
>Ariel<br>
<br><div class=3D"gmail_quote">On Mon, May 11, 2009 at
3:10 PM, Rodrigo Bri=
ce=F1o <span dir=3D"ltr"><<a
href=3D"mailto:rbriceno@sanigest.com">rbric=
eno@sanigest.com</a>></span> wrote:<br><blockquote
class=3D"gmail_quote"=
style=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt
0.=
8ex; padding-left: 1ex;">
<div bgcolor=3D"#ffffff" text=3D"#000000">
Dear SPSS listers. I have a database with information about expenditure
on a list of 45 products.<br>
An identifier for each household is also provided.<br>
The original format of my database is to have for example 45 rows for
the first household that have reported consume on each of the 45
products, however the number of products consumed by households could
vary between 1 and 45, and consequently varying number of rows.<br>
<br>
The variables in my dataset are: <br>
id: HH identifier<br>
R802A: product name identifier<br>
R805A: expenditure made in the product<br>
<br>
What I need is to have each product as a column and each identifier as
a row. I was trying to use the restructuring function, but some errors
appeared: "The INDEX values for case 27964 have occurred before in the
cases with the same ID values."<br>
<br>
I also made a new empty database where I put ID in rows (so each line
is a HH) and 45 columns (where each column is a product) but the
missing part is how to put on each corresponding cell the expenditure
made on each product. I was trying some kind of merge, but I have no
idea about how to establish the filters to do it.<br>
<br>
Any idea about how can I overcome this issue?<br>
<br>
Thanks!<br>
<div>-- <br>
<div>
<p><span style=3D"font-size: 10pt; color: rgb(153, 204,
255);" lang=3D"PT-B=
R">__________________________________________________________________</span=
><span lang=3D"PT-BR"></span></p>
<p><b><span style=3D"font-size: 10pt; font-family:
"Book Antiqua"=
;" lang=3D"PT-BR">Rodrigo
Brice=F1o</span></b><span style=3D"font-size: 10pt;
font-family: "Book=
Antiqua"; color: rgb(153, 204, 255);"
lang=3D"PT-BR"><br>
</span><span style=3D"font-size: 10pt; font-family:
"Book Antiqua"=
;;" lang=3D"PT-BR">Project Manager<br>
Sanigest Internacional</span><span
lang=3D"PT-BR"></span></p>
<p><span style=3D"font-size: 10pt; font-family: "Book
Antiqua";">=
+506<span>=A0
22</span>-91-12-00=A0ext. 113 =A0<b>
<span>Oficina</span></b>
<b>Costa Rica</b><br>
+506=A0
22-32-08-30=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0
=A0 <b>Fax<br>
</b></span><a href=3D"mailto:mail@sanigest.com"
title=3D"blocked::mailto:ma=
il@sanigest.com" target=3D"_blank"><u><span
style=3D"font-size: 10pt; font-=
family:
Sylfaen;">rbriceno@sanigest.com</span></u></a><span
style=3D"font-s=
ize: 10pt; font-family: Sylfaen; color: rgb(153, 204, 255);"><br>
</span><a href=3D"http://www.sanigest.com/"
title=3D"blocked::http://www.sa=
nigest.com/" target=3D"_blank"><u><span
style=3D"font-size: 10pt; font-fami=
ly: Sylfaen;">www.sanigest.com</span></u></a><span
style=3D"font-size: 10pt=
; font-family: Sylfaen; color: rgb(153, 204, 255);"><br>
</span><span style=3D"font-size: 10pt; font-family:
"Book Antiqua"=
;; color: navy;"><br>
MSN: </span><a href=3D"mailto:jbric98@hotmail.com"
title=3D"blocked::mailto=
:jbric98@hotmail.com
mailto:jbric98@hotmail.com"
target=3D"_blank"><u><span style=3D"font-size: =
10pt; font-family: "Book
Antiqua";">jbric98@hotmail.com</span></u=
></a><span style=3D"font-size: 10pt; font-family:
"Book Antiqua";=
color: navy;"><br>
SKYPE: rbriceno1087</span></p>
<p><span style=3D"font-size: 10pt; color: rgb(153, 204,
255);">____________=
_________</span></p>
<p style=3D"text-align: justify;"><span
style=3D"font-size: 8pt; font-famil=
y: "Book Antiqua";">This
communication contains legal information which is privileged and
confidential.
It is for the exclusive use of the address and distribution,
dissemination,
copying or use by others is strictly prohibited. If you have received
this
communication by error, please delete the original message and e-mail
us.</span></p>
<p style=3D"text-align: justify;"><span
style=3D"font-size: 8pt; font-famil=
y: "Book Antiqua"; color: rgb(153, 204, 255);"
lang=3D"ES-CR"><br=
>
</span><span style=3D"font-size: 8pt; font-family: "Book
Antiqua"=
;" lang=3D"ES-CR">Esta comunicaci=F3n contiene informaci=F3n
legal privilegiada y confidencial para el uso exclusivo del
destinatario. La
distribuci=F3n, diseminaci=F3n, copia u otro uso por terceras
personas es estrictamente prohibida. Si usted ha recibido esta
comunicaci=F3n por error, le rogamos borrar el mensaje original y
comunic=E1rnoslo a esta misma direcci=F3n.</span><span
lang=3D"ES-CR"></spa=
n></p>
</div>
</div>
</div>
</blockquote></div><br>
--00504502d07c6cdc510469abc081--
------------------------------
Date: Tue, 12 May 2009 09:27:32 +0800
From: Johnny Amora <bayesian2001@yahoo.com>
Subject: Z-test in SPSS (was: Re: hypothesis testing for difference between two
means)
--0-1535290727-1242091652=:76543
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
Jimjohn wrote:
<<Thanks for all the responses guys. Johnny, I appreciate you explaining
ho=
w
the grouping variable works. Just one follow up question, I understand if I
go to Compare Means -> Independent Test, then this will conduct a t-test to
compare means. My sample size is about 36, I believe if the sample size is
>30, a z test should be used. Any ideas if SPSS can do a Z-test too to
compare means?
=A0
There is no (direct) Z-test in SPSS.=A0 Just use T-test, instead.=A0 You do=
nt need to use Z-test because=A0the T approaches Z as n approaches infinity=
. (That is,=A0the T=3DZ for large n).=A0 Is your sample size enough?=A0 The=
rule of thumb for sample size is 10 to 20 cases per variable.=A0 You shoul=
d also consider the outliers, missing values of your raw data.=A0 You shoul=
d not forget to do some diagnostic tests of your regression model,=A0 The r=
egression page of UCLA might be helpful to you: http://www.ats.ucla.edu/sta=
t/spss/webbooks/reg/default.htm
=A0
Hope this helps.
Johnny
=A0
=A0
--- On Mon, 5/11/09, jimjohn <azam.khan@utoronto.ca> wrote:
From: jimjohn <azam.khan@utoronto.ca>
Subject: Re: hypothesis testing for difference between two means
To: SPSSX-L@LISTSERV.UGA.EDU
Date: Monday, 11 May, 2009, 10:46 PM
Thanks for all the responses guys. Johnny, I appreciate you explaining how
the grouping variable works. Just one follow up question, I understand if I
go to Compare Means -> Independent Test, then this will conduct a t-test to
compare means. My sample size is about 36, I believe if the sample size is
>30, a z test should be used. Any ideas if SPSS can do a Z-test too to
compare means?
To the posters who posted before, thanks for the suggestions. I would
normally do exactly what you guys recommended, but the circumstances are
different here. Someone else has already performed an analysis claiming tha=
t
there is a difference between the two means, that the <$1000 certificate
customers are more sensitive to interest rate changes than the >$1000
certificate customers. Since this is not an intuitive conclusion, I wanted
to run this test to see if the results are significant.
Johnny Amora wrote:
>
> At 10:32 AM 5/8/2009, jimjohn wrote:
>>does anyone here know how to compute hypothesis tests/confidence
interval=
s
>>for the difference between two means in SPSS? For example, I am
comparing
>>the volume growth of my certificates with balance less than $1000
versus
the
>>volume growth with balances greater than $1000. I want to see if the
>>difference in the two means is statistically significant. Any ideas? I
don't
>>think comparing means does it because it has something about grouping
and
>>factors. thanks!
>>--
>
> You can use the Independent Sample TTest procedure. You should have
> numeric variables for GROWTH and BALANCE where GROWTH=C2 as your test
> variable and BALANCE as your grouping variable.=C2=A0 The BALANCE=C2 shou=
ld be
> coded for example as follows: 1=3D balance=C2 less than $1000 and 2=C2 =
=3D greater
> than $1000.=C2=A0 Then run the synax:
> =C2
> T-TEST GROUPS=3DBALANCE(1 2)
> =C2=A0 /MISSING=3DANALYSIS
> =C2=A0 /VARIABLES=3DGROWTH
> =C2=A0 /CRITERIA=3DCI(.95).
>
> The confidence interval (CI) can be changed to=C2 what you want, say .99.=
=C2
> Hope I understand correctly your need.
> =C2
> Cheers,
> Johnny
>
>
>=A0 =A0 =A0=A0=A0Yahoo! Mail Now Faster and Cleaner. Experience it at
> http://ph.mail.yahoo.com=A0 today!
>
--
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Content-Type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
<table cellspacing=3D"0" cellpadding=3D"0"
border=3D"0" ><tr><td valign=3D"=
top" style=3D"font: inherit;"><DIV>Jimjohn
wrote:</DIV>
<DIV><BR><<Thanks for all the responses guys. Johnny,
I appreciate yo=
u explaining how<BR>the grouping variable works. Just one follow up
questio=
n, I understand if I<BR>go to Compare Means -> Independent Test,
then th=
is will conduct a t-test to<BR>compare means. My sample size is about 36,
I=
believe if the sample size is<BR>>30, a z test should be used.
Any idea=
s if SPSS can do a Z-test too to<BR>compare means?</DIV>
<DIV> </DIV>
<DIV>There is no (direct) Z-test in SPSS. Just use T-test,
instead.&n=
bsp; You dont need to use Z-test because the T approaches Z as n
appro=
aches infinity. (That is, the T=3DZ for large n). Is your
sample=
size enough? The rule of thumb for sample size is 10 to 20 cases
per=
variable. You should also consider the outliers, missing values of
y=
our raw data. You should not forget to do some diagnostic tests of
yo=
ur regression model, The regression page of UCLA might be helpful to
=
you: <A
href=3D"http://www.ats.ucla.edu/stat/spss/webbooks/reg/default.htm"=
>http://www.ats.ucla.edu/stat/spss/webbooks/reg/default.htm</A></DIV>
<DIV> </DIV>
<DIV>Hope this helps.</DIV>
<DIV>Johnny</DIV>
<DIV> </DIV>
<DIV><BR><BR> </DIV><BR><BR>--- On
<B>Mon, 5/11/09, jimjohn <I><aza=
m.khan@utoronto.ca></I></B> wrote:<BR>
<BLOCKQUOTE style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
rgb(=
16,16,255) 2px solid"><BR>From: jimjohn
<azam.khan@utoronto.ca><BR>Su=
bject: Re: hypothesis testing for difference between two means<BR>To:
SPSSX=
-L@LISTSERV.UGA.EDU<BR>Date: Monday, 11 May, 2009, 10:46
PM<BR><BR>
<DIV class=3DplainMail>Thanks for all the responses guys. Johnny, I
appreci=
ate you explaining how<BR>the grouping variable works. Just one follow up
q=
uestion, I understand if I<BR>go to Compare Means -> Independent
Test, t=
hen this will conduct a t-test to<BR>compare means. My sample size is
about=
36, I believe if the sample size is<BR>>30, a z test should be
used. An=
y ideas if SPSS can do a Z-test too to<BR>compare
means?<BR><BR>To the post=
ers who posted before, thanks for the suggestions. I would<BR>normally do
e=
xactly what you guys recommended, but the circumstances are<BR>different
he=
re. Someone else has already performed an analysis claiming that<BR>there
i=
s a difference between the two means, that the <$1000
certificate<BR>cus=
tomers are more sensitive to interest rate changes than the
>$1000<BR>ce=
rtificate customers. Since this is not an intuitive conclusion, I wanted<BR=
>to run this test to see if the results are
significant.<BR><BR><BR><BR><BR><BR><BR>Johnny
Amora wrote:<BR>><BR>>=
; At 10:32 AM 5/8/2009, jimjohn wrote:<BR>>>does anyone
here know how=
to compute hypothesis tests/confidence intervals<BR>>>for
the differ=
ence between two means in SPSS? For example, I am
comparing<BR>>>the =
volume growth of my certificates with balance less than $1000
versus<BR>the=
<BR>>>volume growth with balances greater than $1000. I
want to see i=
f the<BR>>>difference in the two means is statistically
significant. =
Any ideas? I<BR>don't<BR>>>think comparing means
does it because it h=
as something about grouping and<BR>>>factors.
thanks!<BR>>>--<B=
R>><BR>> You can use the Independent Sample TTest
procedure. You shou=
ld have<BR>> numeric variables for GROWTH and BALANCE where
GROWTH=C2 as=
your test<BR>> variable and BALANCE as your grouping
variable.=C2 =
The BALANCE=C2 should be<BR>> coded for example as follows: 1=3D
balance=C2 less than $1000 and 2=C2 =3D greater<BR>> than
$1000.=C2&nbs=
p; Then run the synax:<BR>> =C2<BR>> T-TEST
GROUPS=3DBALANCE(1 2)<BR>=
> =C2 /MISSING=3DANALYSIS<BR>> =C2
/VARIABLES=3DGROWTH<BR=
>> =C2
/CRITERIA=3DCI(.95).<BR>><BR>> The confidence interva=
l (CI) can be changed to=C2 what you want, say .99.=C2<BR>> Hope I
under=
stand correctly your need.<BR>> =C2<BR>>
Cheers,<BR>> Johnny<BR>&g=
t;<BR>><BR>>
Yahoo! Mail Now Faster an=
d Cleaner. Experience it at<BR>> <A
href=3D"http://ph.mail.yahoo.com/" t=
arget=3D_blank>http://ph.mail.yahoo.com</A>
today!<BR>><BR><BR>--<=
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href=3D"http://www.nabble.com/hypothesi=
s-testing-for-difference-between-two-means-tp23452014p23484789.html"
target=
=3D_blank>http://www.nabble.com/hypothesis-testing-for-difference-between-t=
wo-means-tp23452014p23484789.html</A><BR>Sent from the SPSSX
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