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2007 Confidence Interval Detail
031/Cameron
031-901/Brownsville ISD

Category Summary

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

Stratum
Variance
A 733,599,585 0.9294 789,326,001 33 15,620 .034540694
A 733,412,191 1.0055 729,400,488 36 9,375 .016105550
A 733,532,038 1.0131 724,047,022 34 6,634 .011981894
A 733,423,319 1.0181 720,384,362 48 3,590 .012969649
C 60,554,370 0.9670 62,620,858 10 4,349 .017860638
C 60,452,190 0.9549 63,307,352 7 1,784 .018319792
C 60,599,519 0.9776 61,988,051 7 495 .009332843
C 60,388,414 0.9605 62,871,852 7 104 .009258513
F1 248,417,379 0.8513 291,809,443 11 1,223 .026300175
F1 247,760,024 0.9397 263,658,640 10 370 .005541863
F1 251,498,175 0.9457 265,938,643 7 129 .013160387
F1 244,333,057 1.0006 244,186,545 6 33 .006823970
L1 94,510,597 1.0123 93,362,241 7 1,148 .017531675
L1 94,836,968 1.0196 93,013,896 7 264 .009585301
L1 94,457,205 1.0127 93,272,642 6 79 .001873333
L1 93,655,140 1.0002 93,636,413 5 15 .003179305
Random Totals: 4,545,430,171   4,652,824,449 241 45,212  
Catg D1 Exception Values: 5,034,630   5,206,690      
Total Test Values (4): 4,550,464,801   4,658,031,139      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 232,901,557

Confidence Interval Values (5)

State Lower Limit: 4,425,129,582 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,550,464,801 (Within Confidence Interval)
State Upper Limit: 4,890,932,696 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,665,566,263 (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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