taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
228/Trinity
228-901/Groveton ISD

Category Summary

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

Stratum
Variance
A 20,179,278 1.0273 19,643,023 7 753 .009236835
A 23,041,982 0.8845 26,050,856 8 412 .054841456
A 24,007,471 0.9079 26,442,858 7 264 .001553996
A 23,528,433 0.9773 24,074,934 8 112 .041124582
C1 3,930,958 0.9240 4,254,284 11 1,428 .005769653
C1 4,614,783 1.3463 3,427,752 9 992 .038233295
C1 3,206,158 0.8809 3,639,639 9 422 .085679125
C1 2,878,727 1.0449 2,755,026 7 96 .001280774
E 62,458,354 0.9106 68,590,329 10 1,090 .016118365
Random Totals: 167,846,144   178,878,701 76 5,569  
Catg J Exception Values: 39,932,450   46,781,592      
Catg D1 Exception Values: 30,088,312   28,685,657      
Total Test Values (4): 237,866,906   254,345,950      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,717,297

Confidence Interval Values (5)

Local Test Value: 237,866,906 (Outside Confidence Interval)
State Lower Limit: 241,628,653 (State Test Value minus Margin of Error Percent)
State Upper Limit: 267,063,247 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 268,024,170 (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