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2009 Confidence Interval Detail
129/Kaufman
129-902/Forney ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 366,783,566 0.9607 381,787,828 20 3,086 .024202288
A 363,773,735 0.9468 384,213,915 21 2,404 .005795487
A 373,646,570 0.9947 375,637,448 18 1,949 .015904713
A 362,166,655 1.0262 352,920,147 20 1,322 .017521558
D3 75,132,727 1.0456 71,856,089 11 1,368 .027624115
F1 44,489,570 0.9402 47,319,262 8 158 .083278036
F1 45,088,360 0.8964 50,299,375 9 40 .019103853
F1 51,599,640 0.9925 51,989,562 6 19 .007081996
F1 50,157,090 0.9987 50,222,379 5 7 .000364575
Random Totals: 1,732,837,913   1,766,246,005 118 10,353  
Catg D1 Exception Values: 4,475,490   3,004,459      
Total Test Values (4): 1,737,313,403   1,769,250,464      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 88,462,523

Confidence Interval Values (5)

State Lower Limit: 1,680,787,941 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,737,313,403 (Within Confidence Interval)
State Upper Limit: 1,857,712,987 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,288,973,866 (See ISD Summary Worksheet)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories

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