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2010 Confidence Interval Detail
025/Brown
025-902/Brownwood ISD

Category Summary

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

Stratum
Variance
A 102,279,116 0.9602 106,518,554 37 2,800 .074754781
A 116,271,670 0.9480 122,649,441 43 1,558 .025441827
A 109,947,279 0.9269 118,618,275 30 900 .048744004
A 124,243,080 0.9653 128,709,292 19 452 .018236909
D3 46,763,290 0.9888 47,292,971 32 1,600 .043278644
F1 44,667,140 0.9946 44,909,652 14 358 .034477363
F1 45,420,330 0.7769 58,463,547 11 105 .054831840
F1 55,264,760 0.9584 57,663,564 11 38 .011852208
F1 34,456,820 1.0718 32,148,554 4 4 .009624686
L1 25,101,310 1.0139 24,757,185 10 320 .001852435
L1 22,612,090 1.0309 21,934,320 12 67 .004266994
L1 21,623,410 1.0073 21,466,703 8 23 .000343619
Random Totals: 748,650,295   785,132,058 231 8,225  
Catg J Exception Values: 36,755,120   34,843,689      
Catg D1 Exception Values: 5,400,590   5,382,451      
Catg L1 Exception Values: 26,357,620   25,551,052      
Total Test Values (4): 817,163,625   850,909,250      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 42,545,463

Confidence Interval Values (5)

State Lower Limit: 808,363,787 (State Test Value minus Margin of Error Percent)
Local Test Value: 817,163,625 (Within Confidence Interval)
State Upper Limit: 893,454,713 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,065,196,947 (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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