Social Science Data Bases

Social Science Data Bases
CSU Northridge March 18, 2011 April 15, 2011 CSU Dominguez Hills

Sponsored by April 15, 2011 CSU Dominguez Hills

Presenters John L. Korey, Political Science, Cal Poly Pomona Eugene J. Turner, Geography, CSU Northridge April 15, 2011 CSU Dominguez Hills

Workshop Agenda Overview of the SSRIC Data Archives Other Data
ICPSR Field Census Roper Other Data Other Workshops Your Feedback April 15, 2011 CSU Dominguez Hills

SSRIC http://www.ssric.org
April 15, 2011 CSU Dominguez Hills

The Council Oldest CSU affinity group (since 1972)
Representatives from CSU campuses meet three times per year Negotiates with data providers for access to data Promotes use of data analysis in research and teaching April 15, 2011 CSU Dominguez Hills

The Council Annual student research conference
April 29, San Jose State Sponsors travel to ICPSR summer workshops in Ann Arbor, Michigan Field Poll Faculty Fellowship (deadline April 15) April 15, 2011 CSU Dominguez Hills

Social Science Databases
The California State University subscribes to social science databases to support teaching research administration Available to campuses by annual subscription April 15, 2011 CSU Dominguez Hills

Assistance from the SSRIC Note: SSRIC members are not staff data consultants or technical assistance providers, but we will do what we can to help students, faculty, and staff to access data Campus representatives April 15, 2011 CSU Dominguez Hills

Inter-university Consortium for Political and Social Research (ICPSR) Field Poll Census Data Roper Center for Public Opinion Research April 15, 2011 CSU Dominguez Hills

Accessing the data bases
On-campus access to data bases is IP authenticated Off-campus access Field: not available Roper: uses library as proxy server -- works just like other library data bases ICPSR: first time, uses library proxy server, after that, you can access from anywhere but you must reauthenticate every 6 months April 15, 2011 CSU Dominguez Hills

Inter-university Consortium for Political and Social Research
ICPSR Inter-university Consortium for Political and Social Research April 15, 2011 CSU Dominguez Hills

ICPSR Primary social science data archive for the U.S.
Founded in 1962; CSU joined in 1972 Over 600 member institutions worldwide Services Vast data archive accessible via the web (ICPSR Direct) Summer program Instructional resources April 15, 2011 CSU Dominguez Hills

ICPSR Teaching April 15, 2011 CSU Dominguez Hills

ICPSR April 15, 2011 CSU Dominguez Hills

Using ICPSR Direct Locate the study Select the data for download
Download the data Import the data for statistical analysis April 15, 2011 CSU Dominguez Hills

Find and Analyze Data Find data Analyze data online Topical archives

Searching for Data Type in key words (e.g., gun control) Click search
Search terms are not case sensitive if all lower case April 15, 2011 CSU Dominguez Hills

Search Results Sort by time period (newest) Click on link

View study description
Downloading the data View study description Download all files April 15, 2011 CSU Dominguez Hills

Agree to the Terms of Use

Saving the Files April 15, 2011 CSU Dominguez Hills

Select Files and Place Them Where You Want to Save Them

What’s in the File? Look in the layers of subfolders until you find the DS0001 folder It will include the: Codebook (pdf file) Questionnaire (pdf file) SPSS file (in this case, it’s a .sav file) Other files April 15, 2011 CSU Dominguez Hills

Open the sav File in SPSS

Other Types of Files you Might Encounter
SPSS portable (.por) files Will work on all platforms Tell SPSS to look for a .por file Raw data (ASCII) file with SPSS syntax (.sps) file You’ll have to create your own .sav file See next slide Raw data file with only a codebook You’ll have to create your own syntax file SPSS Intro workshop discusses how to do this April 15, 2011 CSU Dominguez Hills

What’s a Syntax File? A syntax file is a set of commands to convert a raw ASCII data file into an SPSS system file ASCII + SPSS syntax file = SPSS system file For More Information: April 15, 2011 CSU Dominguez Hills

Other ICPSR Resources SSRIC ICPSR Guide ICPSR Data Use Tutorial
Social Science Variables Database April 15, 2011 CSU Dominguez Hills

The Field Poll April 15, 2011 CSU Dominguez Hills

The Field (California) Poll
Established in 1947 Independent, non-partisan survey of California public opinion Wide range of political and social topics Multiple polls each year Mervin Field April 15, 2011 CSU Dominguez Hills

Accessing Field Data Set up your browser Find polls and data sets
Download data sets April 15, 2011 CSU Dominguez Hills

Setting up your browser
Requires setting passive FTP access Can set up browser for folder view or FTP directory view See the instructions for details: You will only need to do this once for your browser and user account April 15, 2011 CSU Dominguez Hills

Finding Polls Find the poll number
Field Poll Archives ( American Public Opinion Index Check with your library for printed and/or microfiche versions The CALPOLL window Accessible via UCData You will be using the poll number to select the data set for download. April 15, 2011 CSU Dominguez Hills

Searching Polls with UCDATA
Uses SDA Does not include last couple of years Gives you the frequency distributions of the variables you select April 15, 2011 CSU Dominguez Hills 35

UC Data http://ucdata.berkeley.edu
Click on Field Polls April 15, 2011 CSU Dominguez Hills

Field Polls on UCDATA Click on search April 15, 2011
CSU Dominguez Hills

Searching I selected 2000’s April 15, 2011 CSU Dominguez Hills

Keywords Enter gun control April 15, 2011 CSU Dominguez Hills

Search Results Click View April 15, 2011 CSU Dominguez Hills

Results from SDA April 15, 2011 CSU Dominguez Hills

Downloading the Data Click Download April 15, 2011 CSU Dominguez Hills

Choosing the File Double click cal0003 since you
want to download that folder Note that this is directory view April 15, 2011 CSU Dominguez Hills

Saving the Files April 15, 2011 CSU Dominguez Hills

Select the Folder April 15, 2011 CSU Dominguez Hills

Open the Data in SPSS 2 1 April 15, 2011 CSU Dominguez Hills

Other Field Resources SSRIC Field Poll Guide
Field News Releases and California Opinion Indexes News Releases and California Opinion Indexes provide information about poll questions and results The American Public Opinion Index also contains information about Field Polls in which specific questions were asked Can also search the UC San Diego CALPOLL Index site, accessible through UCData April 15, 2011 CSU Dominguez Hills

The U. S. Census of Population and Housing

U. S. Census Collections Construction Transportation For. Trade Housing Business Governments Agriculture Mineral Indus. Manufacturing Population 1800 1850 1900 1950 1990 1787 – Framers of Constitution – Needed to resolve 2 Issues How to deal with apportionment of power for House How to assess taxes land value, persons? April 15, 2011 CSU Dominguez Hills

Census of Population and Housing
Began in 1790 U. S. marshals went to each household Continuing fight over additional social and housing questions – cost 1960 – Most questions in sample questionnaire, Beginning of mailouts and digital tabulation April 15, 2011 CSU Dominguez Hills

Modern Census Concerns
A. Geography Data aggregated for different area units Choice may affect research results Each level has a unique Summary Level code Selected aggregations by geography Nation Region (4) Division (9) State (52) County Place County Subdivision Tract Tract Block Group Block Group Block Block April 15, 2011 CSU Dominguez Hills

Modern Census Concerns
B. Question and Tabulation Changes Race, education, income, age, occupation …. can change between censuses Need to consult documentation appendices i.e. Census 2000 allowed people to indicate more than a single race which complicates race tabulations i.e. Census 2010 socioeconomic data collected in an annual sample Some questions have a different Universe or population at risk ie Educational Attainment: Persons 25+ yrs Categories are defined by Census Bureau ie Age: 0-4 yrs, 5-9 yrs, 10-14yrs … April 15, 2011 CSU Dominguez Hills

Census 1990 and 2000 Tabulations
A. Some data collected on short form from everyone Race, age, family characteristics Reported in Summary Files 1 and 2 B. Some questions collected on long form or sample questionnaire About 1 in 6 households Education, income, occupation, ancestry, commuting time, housing tenure, vehicles…. Reported in Summary Files 3 and 4 C. Note SF2 and SF4 also tabulate data for specified race, Hispanic, and Native American groups April 15, 2011 CSU Dominguez Hills

Census 2010 The American Community Survey
A. Will replace SF3 and SF4 ACS has similar questions and data Some tables have fewer categories B. Based on annual survey of 3 million households Area units over 65,000 reported each year Area units over 20,000 reported as 3-year average Area units less than 20,000 reported as 5-year average April 15, 2011 CSU Dominguez Hills

Census 2010 The American Community Survey
C. Most questions report a Margin of Error 90 percent of values will lie within it Increases with smaller sample size (ie tracts) Actual accuracy less than decennial census so data may be more challenging for small areas First release of 5-year average ( ) in 2010 April 15, 2011 CSU Dominguez Hills

Census Tabulations Public Use Microdata Sample (PUMS)
A. 5% and 1% sample of households Are for individuals so users aggregate to categories in software such as SPSS Provide great flexibility for analysis B. 5% geography reported for Public Use Microdata Areas of at least 100,000 persons May range from parts of a city to multiple counties Some are aggregations of numerous non-contiguous areas April 15, 2011 CSU Dominguez Hills

Will replace legacy factfinder by fall 2011
Census 2000 will be added in May 2011 April 15, 2011 CSU Dominguez Hills

Click Topics and select Race and Ethnicity Then select Ancestry

Click Geography and select City or Town Then select Ancestry

At the top window enter: Los Angeles and click Go

Select Los Angeles city, California and
click the Add button. Then close the window. April 15, 2011 CSU Dominguez Hills

Choose the QT-P13 button and then the View button.

When done, click the Back to Search button

Click the Download button (Ancestry checked)

Extract the desired files and open in Excel

The IPUMS web site for PUMS data

Select the Household menu and the Geographic option.

If you later wish to subset data for a particular state or PUMA check the STATEFIP and PUMA buttons. (green check) April 15, 2011 CSU Dominguez Hills

Select the Person menu and then choose variables from within the list of topics.

Here, Race was selected. Note the Codes column for an explanation of content.

Race comes in both a General version and a Detailed version.

When done, choose the Select Samples button.

Click the Submit sample selections button.
Deselect the Default U.S. sample button and click the % button for this example. Click the Submit sample selections button. 3 1 2 April 15, 2011 CSU Dominguez Hills

Choose the View Cart option.

In the Data Cart make sure you have all items.
Then click the Check Out button. April 15, 2011 CSU Dominguez Hills

Enter your email to login or to set up a new account.

Leave the Extract file type as Rectangular and click Continue.

Under the Set variable options window you may limit the scope of the extract with the Select Cases option. Here, choose the Select Cases button under STATEFIP and Continue. The Attach Characteristics option allows you to add characteristics from the mother, father, or spouse to this person. April 15, 2011 CSU Dominguez Hills

Choose a state [Colorado] from among all states for your extract
Choose a state [Colorado] from among all states for your extract. Click Continue. April 15, 2011 CSU Dominguez Hills

Check your extract and make any needed changes.
Write a brief description of your extract under the Description window. Click the Submit extract button at the bottom to submit your extract request. Races in different states April 15, 2011 CSU Dominguez Hills

You may wait awhile for the extract or use the link from an email to download your data.
You will receive an SPSS syntax file, a codebook of your variables, and the data. Use the SPSS syntax file to convert the data to a SAV file for processing. April 15, 2011 CSU Dominguez Hills

Census Data at ICPSR April 15, 2011 CSU Dominguez Hills

Find & Analyze Data April 15, 2011 CSU Dominguez Hills

Other ICPSR Demographic Data

The Roper Center for Public Opinion Research

http://www.ropercenter.uconn.edu Roper Express iPoll Roper Explorer

Searching for Data Sets
Hover over Quick Links Then click “Search for Datasets” April 15, 2011 CSU Dominguez Hills

Sign In April 15, 2011 CSU Dominguez Hills

Specify Keywords Date range Country April 15, 2011 CSU Dominguez Hills

Enter Search Terms Click on “Search” April 15, 2011 CSU Dominguez Hills

Search Results Download Data Examine Questions Online Analysis

Dataset Abstract Study Description Download Data April 15, 2011
CSU Dominguez Hills

Downloading the Files Click on “Download Dataset”
Click on SPSS portable file April 15, 2011 CSU Dominguez Hills

Downloading the Files April 15, 2011 CSU Dominguez Hills

What if nothing is available?
Some documentation and/or data sets are not available on-line. If you are interested in one of these, the survey number and the title to: Ed Nelson at April 15, 2011 CSU Dominguez Hills

View Questions in iPOLL

Get Question Details April 15, 2011 CSU Dominguez Hills

Question Details April 15, 2011 CSU Dominguez Hills

Online Analysis April 15, 2011 CSU Dominguez Hills

Run Analysis April 15, 2011 CSU Dominguez Hills

Analysis - Results April 15, 2011 CSU Dominguez Hills

More About iPOLL Data base of over 500,000 questions
Includes frequency distributions allowing students to do trend analysis online You will not need a user name or password from on-campus, since the CSU will be IP authenticated. You will be prompted for your address April 15, 2011 CSU Dominguez Hills

Log in to iPOLL April 15, 2011 CSU Dominguez Hills

Searching iPOLL Search for keyword
Click on Boolean or Wildcard for help Let’s search for relig% (note: % is the wildcard) Select the topic of religion Use date from 1/1/2000 to today’s date April 15, 2011 CSU Dominguez Hills

Search April 15, 2011 CSU Dominguez Hills

Results April 15, 2011 CSU Dominguez Hills

Instructional Resources
Click here Then choose one of these April 15, 2011 CSU Dominguez Hills

Fundamentals of Polling

Analyzing Polls April 15, 2011 CSU Dominguez Hills

Teaching Tools April 15, 2011 CSU Dominguez Hills

Other Roper Resources SSRIC Roper Guide April 15, 2011
CSU Dominguez Hills

Other Data April 15, 2011 CSU Dominguez Hills

Other Data Instructional Subsets (http://www.ssric.org/node/361)

Other Workshops April 15, 2011 CSU Dominguez Hills

Workshops on SPSS SPSS – introductory workshop
Creating SPSS data file Transforming data Descriptive statistics SPSS – intermediate workshop Crosstabulations Using means Correlation and regression Charts April 15, 2011 CSU Dominguez Hills

Workshop on Online Statistical Analysis
SDA (Survey Documentation and Analysis) Requires no site license Extremely easy to learn Excellent for classes where you want to introduce students to statistical analysis Tools available – frequencies, crosstabulations, correlation and regression April 15, 2011 CSU Dominguez Hills

Workshop on Data in the Classroom
Statistical literacy – issues and examples Causality Experimental and survey design Unintentional consequences Sampling and statistical inference Change over time Where do we get the data? April 15, 2011 CSU Dominguez Hills

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Social Science Data Bases

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