taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
228/Trinity
228-904/Centerville ISD

Category Summary

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

Stratum
Variance
A 1,693,942 0.8614 1,966,499 7 45 .082791632
A 1,841,959 1.0156 1,813,666 7 26 .046615025
A 1,557,812 1.1173 1,394,265 7 15 .022735640
A 1,801,910 1.2308 1,464,015 7 12 .019458033
E 17,605,610 0.9072 19,406,537 11 331 .027534092
G1 536,680 1.0282 521,961 4 7 .051267022
Random Totals: 25,037,913   26,566,943 43 436  
Catg D1 Exception Values: 7,802,097   7,266,435      
Catg G1 Exception Values: 1,654,860   1,640,557      
Total Test Values (4): 34,494,870   35,473,935      

Margin of Error

Margin of Error Percent: 5.6317011
Margin of Error Value: 1,997,786

Confidence Interval Values (5)

State Lower Limit: 33,476,149 (State Test Value minus Margin of Error Percent)
Local Test Value: 34,494,870 (Within Confidence Interval)
State Upper Limit: 37,471,721 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 28,933,483 (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