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Quantitative
AICP Prep; Quant Analysis: Site; Statistics: Pop Estimates
Question | Answer |
---|---|
Identify methodology used for population estimates | Linear; Symptomatic; Step-Down Ration; Cohort Survival |
Linear population methodology uses what data? | Rate of growth (or decline) to estimate future population |
Symptomatic population methodology uses what data? | Available data is used to project current population e.g. av household size is applied to new housing units to identify pop growth |
Step Down Ration population methodology uses what data? | A ration is applied to current or future population |
Cohort Survival population methodology uses what data? | Current population + natural increase + net migration. Typically by gender and specific age group. |
Which of the population estimate methodology is the most accurate? | Cohort survival population methodology is most accurate. Requires large amounts of data. |
What is the smallest area for which Census information is released? | Census Tract (2,000 - 8,000 people) |
What is the population reported in a Census Tract? | 2,000 - 8,000 people |
What is the typical size of a Census Block? | typically 400 housing units/block |
what is the smallest level for which census data is collected? | The Census Block (ca. 400 housing units) |
identify types of data typically analyzed and describe | Nominal data: can be grouped; lacks intrinsic order. Ordinal data: values can be ranked; no fixed interval between values. Interval data: ordered relationship with magnitude; has a true "0" point. Ratio data: ordered relationship with equal intervals; |
Provide example(s) of Nominal Data and identify best analysis method | Age, Height, SSN. Group into mutually exclusive groups. MODE is best measure of central tendency |
Provide example(s) of Ordinal Data and identify best analysis method | Educational achievement; grades; heights of people; groups of people (e.g. richest in county). MODE and MEDIAN best identify central tendency |
Provide example(s) of Interval Data and identify best analysis method | Temperature; aircraft altitude; years of sun spot data. MEAN is best measure |
Provide example(s) of Ratio Data and identify best analysis method | Length; area; volume; time. Can use any central tendency: MEAN, MEDIAN, or MODE |
what technique is used to indicate SIGNIFICANCE of relationships among variables. | ANOVA (analysis of variance) |
Name the common data distribution patterns | Normal (distributed around a mean; bell curve); skewed (right or left); uniform |
when would you use the chi-square test? (x2) | Used to test for a relationship between two nominal or ordinal based variables. |