taxes Property Tax Assistance

2017 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 23,113,935 0.9410 24,563,162 15 767 .067243079
A 23,820,384 0.9461 25,177,448 17 389 .038997636
A 28,413,224 1.0600 26,804,928 17 289 .068354905
A 27,204,399 1.0051 27,066,361 15 120 .029954723
C1 3,610,413 0.9074 3,978,855 10 1,221 .133877479
C1 1,608,844 1.1273 1,427,166 12 349 .159589497
C1 7,863,851 0.7144 11,007,630 11 1,137 1.377099313
C1 5,206,196 0.8228 6,327,414 10 162 .411996007
E 76,029,942 0.9315 81,620,979 22 1,124 .043150014
Random Totals: 196,871,188   207,973,943 129 5,558  
Catg J Exception Values: 28,494,650   31,298,379      
Catg D1 Exception Values: 34,267,363   32,751,011      
Total Test Values (4): 259,633,201   272,023,333      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,601,166

Confidence Interval Values (5)

State Lower Limit: 258,422,167 (State Test Value minus Margin of Error Percent)
Local Test Value: 259,633,201 (Within Confidence Interval)
State Upper Limit: 285,624,499 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 293,275,176 (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, D2, E, 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