every student. every classroom. every day. healthy kids healthy oakland opportunity mapping update...

every student. every classroom. every day.

Healthy Kids Healthy Healthy Kids Healthy OaklandOakland

Opportunity Mapping UpdateSusan Lindell Radke

OUSD GIS Analyst/Contract DemographerJanuary 28, 2011

22

TASK FORCE GOALTo develop an expanded data framework, including non-

traditional indicators and aligned data tools to support a full-service community school district and the needs of the whole

child.

Opportunity Mapping Update

Develop a map-based data tool to explore alignment of district-wide socio-economic indicators with school and student based data

33 Opportunity Mapping Update

• Current scope of work:Create map-based tool integrating

various school & community databases into a geographic context within an ArcGIS software environment


• Current scope of work:Task #1: Create district-wide base maps

US Census Bureau American Community Survey 5 Year Block Group estimates


The American Community Survey (ACS) is an ongoing statistical survey by the U.S. Census Bureau, sent to approximately 250,000 addresses monthly (or 3 million per year)

It regularly gathers information previously contained only in the long form of the decennial census.

It is the largest survey other than the decennial census that the Census Bureau administers.American Community Survey. (2011, January 4). In Wikipedia, The Free Encyclopedia. Retrieved 16:28, January 28, 2011, from http://en.wikipedia.org/w/index.php?title=American_Community_Survey&oldid=405965594


ACS First Release Top Demographic Indicator Maps


•2005-2009 Map•2000 Map•2005-2009 vs 2000 Data:

•Estimate & Margin of Error


2005-2009 Estimate Range: 29.8 to 30.4 (30.1-0.3) to (30.1+0.3)2000 Estimate Range: 27.0 to 27.4 (27.2-0.2) to (27.2+0.2)Difference: 2.9 (30.1-27.2)

Margin of Error (MOE). An MOE is the difference between an estimate and its upper or lower confidence bounds. Confidence bounds can be created by adding the MOE to the estimate (for the upper bound) and subtracting the MOE from the estimate (for the lower bound). All published ACS MOEs are based on a 90 percent confidence level.

Standard Error. The standard error is a measure of the deviation of a sample estimate from the average of all possible samples.

Statistical Significance. The determination of whether the difference between two estimates isnot likely to be from random chance (sampling error) alone.


But, what about the Margin of Error?

How significant is it?

How does US Census Bureau deal with it?

What is research community saying about it?

1010

Elephant in the room!!


ACS Margin Of Error (MOE)

aka…an obvious truth that is being ignored or goes unaddressed

1111

Functionality and Usability of Information from the American Community SurveyCommittee on National Statistics, October 6, 2006



Every block…really?


Given the known error and limitations…

We still thought it was necessary to explore what the ACS showed us about Oakland:

Foreign bornEducational attainmentBelow povertyMedian Household IncomePublic Assistance


% Foreign Born

MOE

US Census Bureau, American Community Survey 5 Year Estimates 2005-2009


Highest Educational Attainment: % High School Diploma

MOE



% Below Poverty*

*Family of 1 earning below $10,830. (FY 2009/2010 Federal Poverty Guidelines)

MOE



Median Household Income


1818

% Public Assistance




• Other sources of OUSD data:Free & Reduced Price Meal PlanCalifornia Healthy KidsPhysical Fitness TestOakland Housing Authority

2020

% Free and reduced price meal plan students at each school


Free and Reduced Price Meal Plan

School-level data mapped to individual student address

School-level data mapped to individual student address / interpolated district-wide


• Where do we go from here?Search for other sources of socio-

economic data to complement ACS dataMap student data at school level:

California Healthy KidsPhysical Fitness TestOakland Housing Authority

every student. every classroom. every day. healthy kids healthy oakland opportunity mapping update...

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