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2	Data Collection Overview of Data Collection Methods for Neighborhood Planning “The power to label people deficient and declare them in need is the basic tool of . . . oppression in modern industrialized societies . . . .”: John McKnight
3	Census Geography Neighborhood Scale
4	Sizes of Census Units Census Tract 1,500 to 8,000 persons / 4,000 optimal. Relatively stable over time. Relatively homogeneous when established. Census Block Group 600 to 3,000 persons / 1,500 optimal. Within a Census Tract Census Block Bounded on all sides by visible features Public Use Microsample (PUMS) Individual Census Forms (1930 or older)
5	Identifying Census Units Census Block – 4 digit number within Tract Census Block Groups - same 1st digit of Block number Census Tracts – with same number: 4 digits to left 2 to right
6	Census Data Elements STF – 1 (100% sample – short form.) Age, Sex, Race, Hispanic, Household type (e.g. single person hh with children), Relationship of householders, Tenure (owned or rented), Vacancy status. Information reported by average or median values and in tabular form.
7	Census Data Elements STF – 3 (17% sample – long form) Also - Ancestry, Language, Citizenship, Disability, Education, Employment status, Income, Poverty status, Industry, Occupation, Journey to work, Marital status, Value of home, Rent per month, Vehicles, Age of structure, Year moved into residence, Number of units in residence, Etc. Information reported by average or median values and in tabular form.
8	Census Data Elements Census Tracts. STF-1 and STF 3 data Census Block Groups. STF-1 and STF 3 data Census Blocks. Selected STF-1 data
9	Census Data Elements Public Use Microsample Data 1% - 5% samples with virtually all data elements.
10	Population Forecasts P = B - D + M, where P equals population B equals births D equals deaths M equals migration
11	“Cohort-Component” Population Forecasts Starting population in study area obtained from Census Births are based on women’s age specific live birth rates in 5 year increments from 15 to 49 years of age Deaths are obtained from “life tables” - age specific death rates per 100,000 Migration based on net difference between increase in local labor force and number of jobs in local economy
12	City-Wide Population Forecasts
13	Trumbull Population Forecast
14	Neighborhood Population Forecast
15	Neighborhood Population Forecast
16	Trumbull Population Forecast
17	Neighborhood Population Change Age existing population Add new single family homes and apartments Reduce population of young adults Replace those passing away
18	Survey Research Represent conditions of whole group through information from a carefully selected part Survey sample data generally more accurate than enumerations Each member of the sample has the same probability of selection (or a known one)
19	Survey Research Asking Questions Closed ended Open ended (convert to closed ended for coding) One issue at a time Clear and Unambiguous Short Respondent able to answer question
20	Survey Research Asking Questions Salient to respondent Avoid Negatives in the question Biased items and terms Socially restricted items Use of titles Ask more interesting and less controversial questions at start of survey
21	Oral History Short questions, one at a time Start with non-controversial issues Never “lead” respondent Probe – “Why?” “How?” Never interrupt
22	Types of Surveys Unbiased sample assumes that everyone selected in sample completed survey Mail survey 50% response rate is good and 70% very good Direct interviews (person-to-person & telephone) 80-85% completion rate objective Avoid interviewing small % of selected sample in telephone survey
23	GIS Analysis
24	GIS Analysis
25	GIS Analysis
26	GIS Analysis
27	GIS Analysis
28	GIS Analysis
29	GIS Analysis
30	Employment Forecasts Constant Share Simple Regression OBERS – Shift-Share From Greenberg, Krueckeberg, and Michaelson Local Population and Employment Projection Techniques
31	Employment Forecasts
32	Employment Forecasts
33	Employment Forecasts