deck_1036623 Flashcards
Mass appraisal uspap standard #?
6
Supply factors
Building costsInterest ratesEconomic conditions
A physical, conceptual, or mathematical representation of how something works
Model
Income model structure
I\R=V
Basic steps of model Building
SpecificationCalibrationStructure
Model specification
What to include in what format
Model calibration
Development of variation schedules, formulas, tables
Model structure
AdditiveMultiplicativeHybrid
Hybrid additive cost model
MV=GQx((PlxLSIZE)+(PBxBSIZE))
Basic sales comparison approach
MVs=Sc+ADJc
General appraisal process 7 steps
Define valuation problemDetermine scope of workPreliminary analysis and planSelect and collect dataDetermine highest and best useApply appropriate valuation approachesReconcile and report opinion of value
Demand LCQ
LocationConditionQuality of construction
Supply BIE
Building costsInterest ratesEconomic conditions
Exploratory data analysis-DDMT
Data quality reviewData distributionsMarket patterns and relationshipsTime trends
Model development
SpecificationCalibrationQuality assurance
Model ARR
ApplicationReview and reconciliationFinal value determination
Batch data entry
Held in temporary file until uploaded
Start and end with
Ratio study
Binary variable
Quant-Yes or no. (0,1) Qual-nom-swimming poolQual-ord-view of mountains
Discrete variable
Qualitative items that have 3 or more predefined values
Range edit
Sq ft 400-9000Yr blt
Consistency edit
Lot area > gfla
Convey information about presumed rank
Ordinal values
May be alphabetic or numerical but convey nothing about rank
Nominal vslues
Data inventory manuals describe
How to collect and code data
The completeness of the available data
Quantity
Standard deviation
Find meanSubtract and square differencesSum and divide by n-1Find sq rt
COV
Divide SD by meanMultiply by 100
Dependent is on which axis?
vertical
Independent variable on which axis?
Horizontal
Polygon chart aka
LineCan show multiple variables
Chart a frequency distribution using a
Histogram
5 measures of dispersion PQRSC
PercentilesQuartilesRangeStandard deviationCOV
Shows the distribution of values for two binary or discrete variables
Cross tabulations
A ____can be used to show several variables simultaneously
Polygon
_____ compare statistics by strata, like av sale price by nhbd
Breakdowns
______ show summary stats for dep variable by combo of 2 ind variables. Av sale price per sq ft by grade and nhbd
Contingency table
Three components of property tax system
Assessment, appeal, collection
4 components of mass appraisal system-DEMM
Data collectionExploratory data analysisModel developmentModel application review and reconciliation
Three methods to evaluate data adequacy
FieldRatioPilot
Multiple parcels should/should not be auto excluded
Not