Research & Assessment Methods Flashcards
GIS, Census and Economic and Demographic Analysis
What are the four major population estimates and projection models?
Linear, Symptomatic, Step-Down Ratio and Cohort Survival.
Which projection method uses the change in population over a period of time and extrapolates it into the future?
Linear method
Which projection method uses the rate of growth over a period of time to estimate the current or future population?
Exponential and Modified Exponential methods.
What is the difference between exponential and modified exponential method?
The modified exponential assumes there’s a cap to growth and at some point growth will stop or slow down resulting in an s-shaped curve as opposed to a curved line like the exponential method.
The gompertz projection is a modification of the modified exponential where __________________?
growth is slow in the beginning and speeds up over time
This projection method uses data that is indirectly related to population size, such as housing starts, new driver’s licenses, or average household size.
Symptomatic Method
This projection method uses the ratio of the population in a city or a county.
Step-Down Ratio method
This projection method multiplies the Census data for the number of housing units by the occupancy rate and persons per household.
Distributed Housing Unit Method
This projection method uses current population plus natural increase and net migration.
Cohort Survival.
Which method is the most accurate population projection but requires the most data?
Cohort Survival
What are the three major economic analysis methods?
Economic base, shift share & input-output analysis
An economic base analysis looks at what kind of economic activity and calculates what for each industry?
basic (can be exported) and non basic (locally oriented) activity. It calculates a Location Quotient for each industry
The __________ is the ratio of an industry’s share of local employment divided by the share of the nation.
LQ (location quotient)
A LQ greater than 1 indicates ____________, while an LQ less than 1 indicates __________?
exporting economy
importing economy
Which analysis method analyzes a local economy in comparison with a larger economy?
Shift-share
Which method can be used to determine the employment effect that a particular project has on a local economy?
Input-output analysis
The __________ is the standard used by the Federal statistical agencies in classifying business establishments.
NAICS - North American Industry Classification System
_____________ is a term used to describe computerized mapping.
GIS
Spatial data can be displayed accurately because of ____________
georeferencing, latitude and longitude
Attribute data is typically stored in a _____________
spreadsheet/database
Which instrumental person is known for the illustrated concepts of layering thematic data with various attributes?
Ian McHarg
A __________________ is a two-dimensional representation of a portion of a three-dimensional surface of the earth.
Topographic
________________ can be downloaded from the Census into GIS
TIGER files
___________________ show digital data on elevation
Digital elevation models (DEM)