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| What factors are important to determining populaiton projections? | Migration, birth rate, death rate. |
| What is a tiger file? | digital database of geographic features, such as roads, railroads, rivers, lakes, legal boundaries, census statistical boundaries, etc. covering the entire United States |
| what is the cohort survival method of population projection | The study of a group by a specific characteristic (age, grade, income) increased by the rate that group survives onto the next year |
| What is a HUM | Housing Unit Method, a process of using housing data for population projections |
| What are symptomatic indicators | Data series such as building permits that are reflective of population change and can be used in developing current population estimates. |
| What is the composite method for estimating populations? | Takes various age groups and determines the estimate for each, then aggregates them together. |
| what is the constant share technique | Assumes that the portion of a sample's type (people, age, occupation, animal, etc..) in a given population/area will remain constant through time. |
| What is shift share technique | An projection for employment / population that takes into account the shift/movement of jobs & people from or to a community |
