taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
254/Zavala
254-901/Crystal City ISD

Category Summary

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

Stratum
Variance
A 12,546,718 0.6466 19,404,142 12 820 .023054950
A 12,851,930 0.6062 21,200,808 10 485 .072073770
A 12,787,260 0.7606 16,812,069 12 331 .051169141
A 13,366,470 0.9775 13,674,138 9 180 .017969616
D3 27,194,767 0.7138 38,098,581 21 2,193 .251870045
F1 3,736,370 0.6299 5,931,688 9 87 .161641584
F1 4,134,000 0.6527 6,333,691 8 35 .291875402
F1 4,875,540 0.7721 6,314,648 5 14 .275414255
G1 23,896,070 1.0168 23,501,249 8 39 .036392553
G1 23,987,634 1.0367 23,138,453 5 9 .015532649
G1 21,909,734 1.0158 21,568,945 3 4 .008307278
L1 2,126,550 1.0070 2,111,768 9 87 .004855542
L1 2,007,290 0.9616 2,087,448 8 20 .031356058
L1 2,027,370 0.9497 2,134,748 3 5 .033072538
L1 1,868,020 1.1096 1,683,508 2 2 .012995750
Random Totals: 169,315,723   203,995,884 124 4,311  
Catg D1 Exception Values: 36,324,770   37,487,131      
Catg F1 Exception Values: 3,162,650   3,479,293      
Catg G1 Exception Values: 23,029,795   22,648,699      
Total Test Values (4): 231,832,938   267,611,007      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,380,550

Confidence Interval Values (5)

Local Test Value: 231,832,938 (Outside Confidence Interval)
State Lower Limit: 254,230,457 (State Test Value minus Margin of Error Percent)
State Upper Limit: 280,991,557 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 292,560,742 (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