taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 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 41,747,700 0.9877 42,267,591 10 361 .005428558
A 47,866,550 0.9770 48,993,398 14 261 .013989315
A 47,667,710 1.0131 47,051,337 14 187 .001220647
A 47,062,800 1.0206 46,112,875 10 111 .013486879
E 67,139,470 0.9348 71,822,283 17 539 .027472060
G1 2,096,454 0.9682 2,165,311 5 10 .225239614
G1 1,932,686 0.9619 2,009,238 3 4 .008826155
G1 2,500,077 0.8765 2,852,341 2 3 .187347977
Random Totals: 258,013,447   263,274,374 75 1,476  
Catg D1 Exception Values: 40,548,240   49,435,676      
Catg G1 Exception Values: 7,986,797   7,960,403      
Total Test Values (4): 306,548,484   320,670,453      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 16,033,523

Confidence Interval Values (5)

State Lower Limit: 304,636,930 (State Test Value minus Margin of Error Percent)
Local Test Value: 306,548,484 (Within Confidence Interval)
State Upper Limit: 336,703,976 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 330,245,803 (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