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2007 Confidence Interval Detail
079/Fort Bend
079-907/Fort Bend ISD

Category Summary

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

Stratum
Variance
A 3,935,990,700 0.9546 4,123,183,218 38 32,193 .001691736
A 3,935,401,436 0.9823 4,006,313,179 46 23,074 .003418740
A 3,935,568,074 0.9670 4,069,873,913 47 16,268 .003091417
A 3,935,387,478 0.9626 4,088,289,506 43 8,915 .001914458
B 89,579,522 0.9938 90,138,380 8 249 .011411318
B 89,851,003 1.0082 89,120,217 4 7 .004102640
B 91,198,679 1.0194 89,463,095 3 5 .002690415
B 75,102,822 1.0438 71,951,353 2 3 .000816459
C 111,042,641 0.9942 111,690,446 34 1,600 .002220438
C 111,090,089 1.0160 109,340,639 17 293 .006889112
C 112,405,886 0.9983 112,597,301 7 106 .005596946
C 109,540,702 0.9965 109,925,441 10 44 .000209787
F1 482,252,425 0.9582 503,289,945 14 668 .020000819
F1 484,607,479 0.9270 522,769,665 8 214 .032786285
F1 482,988,983 0.9484 509,267,169 8 75 .012242911
F1 476,034,580 0.9817 484,908,404 5 21 .043522538
L1 173,495,465 0.9409 184,393,097 7 2,547 .011535476
L1 173,435,458 1.0677 162,438,380 7 314 .017714925
L1 174,559,103 0.9315 187,395,709 6 84 .013053670
L1 171,518,258 1.0757 159,448,041 6 26 .036470296
Random Totals: 19,151,050,783   19,785,797,098 320 86,706  
Catg D1 Exception Values: 5,491,790   5,170,598      
Total Test Values (4): 19,156,542,573   19,790,967,696      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 989,548,385

Confidence Interval Values (5)

State Lower Limit: 18,801,419,311 (State Test Value minus Margin of Error Percent)
Local Test Value: 19,156,542,573 (Within Confidence Interval)
State Upper Limit: 20,780,516,081 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 20,042,067,120 (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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