taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
226/Tom Green
226-906/Wall ISD

Category Summary

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

Stratum
Variance
A 39,497,620 0.9323 42,365,784 11 304 .078292792
A 49,834,940 1.0193 48,891,337 9 245 .007678806
A 73,493,140 1.0161 72,328,649 12 271 .004188581
A 75,017,990 0.9288 80,768,723 10 179 .018359398
E 84,180,600 0.9888 85,134,102 11 543 .004846398
L1 4,566,140 0.9981 4,574,832 9 69 .000783647
L1 4,893,050 1.0113 4,838,376 6 15 .000349134
L1 7,636,750 0.9557 7,990,740 4 8 .000960616
Random Totals: 339,120,230   346,892,543 72 1,634  
Catg D1 Exception Values: 42,500,410   36,049,649      
Catg L1 Exception Values: 5,140,800   4,919,727      
Total Test Values (4): 386,761,440   387,861,919      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 19,393,095

Confidence Interval Values (5)

State Lower Limit: 368,468,824 (State Test Value minus Margin of Error Percent)
Local Test Value: 386,761,440 (Within Confidence Interval)
State Upper Limit: 407,255,014 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 389,624,324 (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