For ACS 2005-2009, table B08301 has means of transportation to work
including car only, carpool, and various types of public transportation.
Just watch those MOE's.
Mara Kaminowitz
GIS Analyst
.........................................................................
Baltimore Metropolitan Council
Offices at McHenry Row
1500 Whetstone Way
Suite 300
Baltimore, MD 21230
410-732-0500 ext. 1030
<mailto:mkaminowitz(a)baltometro.org> mkaminowitz(a)baltometro.org
<http://www.baltometro.org/> www.baltometro.org
_____
From: Mark.Byram(a)dot.state.oh.us [mailto:Mark.Byram(a)dot.state.oh.us]
Sent: Tuesday, December 28, 2010 9:37 AM
To: ctpp-news(a)chrispy.net
Subject: RE: [CTPP] mode to work by small workplace geographies
I recently got the following question from our bike and ped coordinator. I'm
a bit rusty as I have not used census in a while so I thought I'd throw it
out there for all you census experts to see how you would respond.
What dataset is the best to look at to see how many people within a project
area do not take a car to work and/or own a car?
Mark
Hi Everyone! Hope you had a relaxing weekend!
Tables for small geography at the WORKPLACE. The ACS tables for
2005-2009 (5 - year summary) do NOT have small geography "for workplace
geography." This kind of table will be available in the CTPP 5-year
(2006-2010) which we expect in 2012. The reason is that the Census
Bureau's regular geocoding for workplaces only goes down to county and
place. About 25% of responses do not have sufficient detail for block
level geocoding, therefore an imputation routine is required to report
workplace at tract or blockgroup geography. We call this imputation
routine "extended workplace allocation" and the work is currently being
developed for the CTPP. Once it is in place for the CTPP 2006-2010, we
hope that the Census Bureau will be able to apply it for the ACS
standard products.
Historically, the CTPP was the only decennial census "long form" product
that included tabulation for workplace geography and for the flow
between home and work. I was glad to see that the ACS Office started to
include workplace tabulations in the ACS standard table set.
Elaine Murakami
FHWA Office of Planning, Wash DC
206-220-4460 (in Seattle)
As you probably know, the CTPP 2006-2010 will have additional small area
data that is synthetic or "modeled." This is NCHRP 08-79 project, in
progress by Westat. This work is to avoid the heavy data suppression
we expected given the CB requirement to protect individual
confidentiality, and some of the small shares of specific commute modes
that increase the probability of matching to a unique record. The job
is to develop models that retain the characteristics of the original
data, so that the resulting data is still usable for transportation
planning, but still protects individual confidentiality. Because the
work is done at the Census Bureau, the perturbed data can be compared to
the original data.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Flintoft, Anna E.
Sent: Monday, December 27, 2010 6:49 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] mode to work by small workplace geographies
Does anyone know when the census will release mode of transportation to
work by smaller workplace geographies than place? I was disappointed
that the 2005-2009 ACS didn't have it. Coming up with a work trip mode
split for downtown is something people ask us about all the time.
Thanks.
* * * * * * * * * * * * * * * * * * * * * * * *
Anna Flintoft, PTP
Transportation Planner
Department of Public Works - Transportation Planning and Engineering
City of Minneapolis
Room 301, City of Lakes Building
309 2nd Avenue South
Minneapolis, MN 55401
(612) 673-3885 (office)
(612) 269-9410 (cell)
anna.flintoft(a)ci.minneapolis.mn.us
* * * * * * * * * * * * * * * * * * * * * * * *
Look here for details:
http://www.census.gov/acs/www/guidance_for_data_users/handbooks/
<http://www.census.gov/acs/www/guidance_for_data_users/handbooks/>
and the document what Researchers need to know will help you too:
http://www.census.gov/acs/www/Downloads/handbooks/ACSResearch.pdf
On Tue, Dec 21, 2010 at 10:22 AM, Jason Gillow <jason.gillow(a)ovrdc.org>wrote:
> Hello
>
> I was wondering how do you handle combining different geographic areas with
> each other to form a regional profile. For example, my office is a regional
> planning organization that serves 12 counties. I want to take the profile
> data from ACS 2005-09 5-year estimates for each county and form a profile of
> my regional, I know how to combine the estimates and do the percentages, but
> how do I handle the margin of error columns? Is there their a reference or
> guidance on this?
>
> Thank you
> Jason
>
> Jason Gillow
> Research/Planning Specialist II
> Ohio Valley Regional Development Commission
> 9329 St Rt 220 E, Suite A
> Waverly, OH 45690
> Phone: 740-947-2853 or 800-223-7491 (In Ohio)
> Fax: 740-947-3468
> www.ovrdc.org
> Email: jgillow(a)ovrdc.org
>
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)chrispy.net
> http://www.chrispy.net/mailman/listinfo/ctpp-news
>
--
Krishnan Viswanathan
1101 High Meadow Dr
Tallahassee FL 32311
Hi Everyone-- Brian McKenzie at the Census Bureau provided this information on viewing files in Excel to help those of you when you download the tract or block group data from the "summary file" format, instead of the AFF.
Please be sure to share your experiences with analyzing the new 2005-2009 ACS data with the CTPP listserv. Thanks in advance.
Elaine
________________________________
From: brian.mckenzie(a)census.gov [mailto:brian.mckenzie(a)census.gov]
The Excel-based retrieval tool that I mentioned yesterday can be access via the following page. Once you http://www.census.gov/acs/www/data_documentation/summary_file/ <http://www.census.gov/acs/www/data_documentation/summary_file/> . Below this link is the user guide. You just download the excel file with the macro built into it onto your hard drive, and you can view any SF table in Excel format rather than having to deal with ASCII files.
Does anyone know when the census will release mode of transportation to
work by smaller workplace geographies than place? I was disappointed
that the 2005-2009 ACS didn't have it. Coming up with a work trip mode
split for downtown is something people ask us about all the time.
Thanks.
* * * * * * * * * * * * * * * * * * * * * * * *
Anna Flintoft, PTP
Transportation Planner
Department of Public Works - Transportation Planning and Engineering
City of Minneapolis
Room 301, City of Lakes Building
309 2nd Avenue South
Minneapolis, MN 55401
(612) 673-3885 (office)
(612) 269-9410 (cell)
anna.flintoft(a)ci.minneapolis.mn.us
* * * * * * * * * * * * * * * * * * * * * * * *
This is one of those points of speculation and spin. If you ask the CB
the official line will be that it is so big and contains literally
mountains of tables that it is impractical to serve up with an online
search engine. They will tell you that comments on this were asked for in
the Federal Register and there was not a huge outcry. However, if you
"put your ear to the ground" you will hear some speculate that it is
because the tables are so hard to work with due to confidentiality
suppression and large margins of errors that the CB wanted to keep the
data from the "novice" user. As one noted user put it, "they are putting
the data on the top shelf just out of reach of the kids."
What would be of use here is for people who have begun to work with it to
share their experiences.
Form the CB press release today...
The U.S Census Bureau is pleased to announce the release of the 2005-2009
American Community Survey (ACS) 5-year estimates on American FactFinder.
There you will find tables with social, demographic, housing, and economic
data for areas down to the census tract level.
You can access the newly-released data on American FactFinder at:
2005-2009 ACS 5-year data
http://factfinder.census.gov/servlet/DatasetMainPageServlet?_program=ACS&_s…
> Does anyone know why the Block Group data is not being released via the
> AFFâs standard pull-down menus? I was under the impression that today
> (12/14) was the release date for this data. I understand that it is
> available via Summary File, but this is far from user friendly.
>
>
>
> When will the data be available via the AFFâs standard access method?
>
>
>
> Thank you,
>
> Nick Lindeman
>
>
>
> Nicholas Lindeman
> Economic & Systems Data Analyst
>
> Nashville Area MPO
> 800 2nd Ave. S.
>
> P.O. Box 196300
> Nashville, TN 37219-6300
> (615) 862-7198
> lindeman(a)nashvillempo.org
> http://www.nashvillempo.org <http://www.nashvillempo.org/>
>
>
>
>
>
>
>
> From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net]
> On Behalf Of Elaine.Murakami(a)dot.gov
> Sent: Tuesday, December 07, 2010 4:15 PM
> To: ctpp-news(a)chrispy.net
> Subject: FW: [CTPP] ACS 2005-09 comparisons with 2000 SF3
>
>
>
> Correction to my earlier email: 2005-2009 ACS Block Group data WILL be
> released on December 14.
>
>
>
> From: brian.mckenzie(a)census.gov [mailto:brian.mckenzie(a)census.gov]
>
> Good Afternoon Mara and Elaine,
> The summary file data (block group level data) will be available on
> December 14th. You can use American Factfinder as a portal. You will be
> able to download summary file data via the FTP website at
> <http://www2.census.gov/acs2009_5yr/summaryfile/
> <http://www2.census.gov/acs2009_5yr/summaryfile/> >. There will also be a
> clickable link next to the familiar portion of AFF in which you select the
> desired ACS year(s) for which you would like data. Hope this helps.
>
> Brian McKenzie
> Analyst, Journey to Work and Migration Statistics Branch
> U.S. Census Bureau
> 301-763-6532
> brian.mckenzie(a)census.gov
>
>
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)chrispy.net
> http://www.chrispy.net/mailman/listinfo/ctpp-news
>
Margins of error around ACS 5-year estimates is about 1.75 times as
large as those associated with the 2000 Census Long Form estimates. I
assume NY Time's maps (percentage changes) already accounted for MOEs.
But it would be nice to put a MOE note for those absolute numbers they
are presenting.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Nancy Jones
Sent: Wednesday, December 15, 2010 12:14 PM
To: ctpp-news(a)chrispy.net
Subject: RE: [CTPP] Mapping America using ACS2005-2009 from NY Times
Hi Liang and others:
I agree that the interactive map they put together is amazing. However,
I am interested to know what everyone thinks about their exclusion of
margins of error. Note, they did present change since 2000 for the
measures they show, with no mention of MOE's. Thoughts?
Nancy
Nancy Jones
Data Manager
Baltimore Neighborhood Indicators Alliance - Jacob France Institute
University of Baltimore
http://www.ubalt.edu/bnia <http://www.bniajfi.org/>
njones(a)ubalt.edu
410-837-4015
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang Long
Sent: Wednesday, December 15, 2010 11:04 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] Mapping America using ACS2005-2009 from NY Times
I was reading the NY Times on my way to work today and found out there
are a serious of articles about ACS2005-2009. The most amazing thing is
that they developed this interactive map at the Census Tract level for
the whole nation. The maps show household income, home value, education
and race and ethnicity at each tract and also the percentage change from
the Census 2000.
Here is the link. You got to check this out!
http://projects.nytimes.com/census/2010/explorer?ref=us
<http://projects.nytimes.com/census/2010/explorer?ref=us>
Liang Long
Cambridge Systematics, Inc.
4800 Hampden Lane
Suite 800
Bethesda, MD 20814
tel 301 347 9141
fax 301 347 0101
FHWA 202-366-6971
e-mail llong(a)camsys.comwww.camsys.com
That is fascinating
Thanks for sharing
Ali Bonakdar, AICP
Director
Corvallis Area Metropolitan Planning Organization
301 SW. 4th Street, #140
Corvallis, OR 97333
Ph: (541) 758-1911
Fax: (541) 758-3127
Email: abonakda(a)ocwcog.org<mailto:abonakda(a)ocwcog.org>
Web: www.corvallisareampo.org<http://www.corvallisareampo.org/>
________________________________
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang Long
Sent: Wednesday, December 15, 2010 8:04 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] Mapping America using ACS2005-2009 from NY Times
I was reading the NY Times on my way to work today and found out there are a serious of articles about ACS2005-2009. The most amazing thing is that they developed this interactive map at the Census Tract level for the whole nation. The maps show household income, home value, education and race and ethnicity at each tract and also the percentage change from the Census 2000.
Here is the link. You got to check this out!
http://projects.nytimes.com/census/2010/explorer?ref=us
Liang Long
Cambridge Systematics, Inc.
4800 Hampden Lane
Suite 800
Bethesda, MD 20814
tel 301 347 9141
fax 301 347 0101
FHWA 202-366-6971
e-mail llong(a)camsys.comwww.camsys.com
Hi Liang and others:
I agree that the interactive map they put together is amazing. However,
I am interested to know what everyone thinks about their exclusion of
margins of error. Note, they did present change since 2000 for the
measures they show, with no mention of MOE's. Thoughts?
Nancy
Nancy Jones
Data Manager
Baltimore Neighborhood Indicators Alliance - Jacob France Institute
University of Baltimore
http://www.ubalt.edu/bnia <http://www.bniajfi.org/>
njones(a)ubalt.edu
410-837-4015
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang Long
Sent: Wednesday, December 15, 2010 11:04 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] Mapping America using ACS2005-2009 from NY Times
I was reading the NY Times on my way to work today and found out there
are a serious of articles about ACS2005-2009. The most amazing thing is
that they developed this interactive map at the Census Tract level for
the whole nation. The maps show household income, home value, education
and race and ethnicity at each tract and also the percentage change from
the Census 2000.
Here is the link. You got to check this out!
http://projects.nytimes.com/census/2010/explorer?ref=us
<http://projects.nytimes.com/census/2010/explorer?ref=us>
Liang Long
Cambridge Systematics, Inc.
4800 Hampden Lane
Suite 800
Bethesda, MD 20814
tel 301 347 9141
fax 301 347 0101
FHWA 202-366-6971
e-mail llong(a)camsys.comwww.camsys.com
I was reading the NY Times on my way to work today and found out there are
a serious of articles about ACS2005-2009. The most amazing thing is that
they developed this interactive map at the Census Tract level for the
whole nation. The maps show household income, home value, education and
race and ethnicity at each tract and also the percentage change from the
Census 2000.
Here is the link. You got to check this out!
http://projects.nytimes.com/census/2010/explorer?ref=us
Liang Long
Cambridge Systematics, Inc.
4800 Hampden Lane
Suite 800
Bethesda, MD 20814
tel 301 347 9141
fax 301 347 0101
FHWA 202-366-6971
e-mail llong(a)camsys.comwww.camsys.com