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2008 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 99,808,639 0.9444 105,684,709 29 2,949 .111835534
A 94,026,050 0.9784 96,101,850 47 1,376 .020225753
A 104,285,020 0.9242 112,838,152 31 960 .007836299
A 123,019,150 0.9782 125,760,734 15 549 .030876652
D3 42,417,112 0.8649 49,042,793 25 1,592 .083188523
F1 35,627,510 0.9616 37,050,239 15 346 .150994615
F1 45,685,010 0.9238 49,453,356 15 125 .035656511
F1 39,076,710 0.9873 39,579,368 10 35 .001080677
L1 25,199,200 1.0239 24,610,997 9 339 .002833407
L1 20,832,680 0.9868 21,111,350 9 72 .000273386
L1 33,751,520 0.9887 34,137,271 8 36 .000150075
Random Totals: 663,728,601   695,370,819 213 8,379  
Catg J Exception Values: 39,219,770   39,159,178      
Catg D1 Exception Values: 4,913,386   4,746,952      
Catg F1 Exception Values: 39,475,240   41,178,712      
Catg L1 Exception Values: 17,146,120   17,517,895      
Total Test Values (4): 764,483,117   797,973,556      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 39,898,678

Confidence Interval Values (5)

State Lower Limit: 758,074,878 (State Test Value minus Margin of Error Percent)
Local Test Value: 764,483,117 (Within Confidence Interval)
State Upper Limit: 837,872,234 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,069,640,264 (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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