taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
226/Tom Green
226-907/Grape Creek ISD

Category Summary

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

Stratum
Variance
A 44,410,150 0.8415 52,774,985 11 878 .095097650
A 42,852,060 0.8838 48,486,151 16 453 .048246910
A 43,984,330 0.9600 45,817,010 18 316 .007142201
A 61,836,160 1.0253 60,310,309 60 266 .009041238
E 21,286,490 1.1717 18,167,184 10 351 .023326163
Random Totals: 214,369,190   225,555,639 115 2,264  
Catg J Exception Values: 2,932,540   2,785,203      
Catg D1 Exception Values: 6,801,970   5,269,711      
Total Test Values (4): 224,103,700   233,610,553      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,680,527

Confidence Interval Values (5)

State Lower Limit: 221,930,026 (State Test Value minus Margin of Error Percent)
Local Test Value: 224,103,700 (Within Confidence Interval)
State Upper Limit: 245,291,080 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 242,126,848 (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