taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
039/Clay
039-903/Petrolia ISD

Category Summary

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

Stratum
Variance
A 16,591,400 1.0550 15,726,445 12 377 .036065870
A 16,992,170 0.9922 17,125,751 11 199 .029528191
A 14,467,030 0.9607 15,058,843 10 104 .002448052
A 13,299,950 1.0275 12,943,990 10 65 .001355277
D3 28,503,130 0.9591 29,718,622 16 1,828 .004291029
Random Totals: 89,853,680   90,573,651 59 2,573  
Catg J Exception Values: 7,543,720   6,848,049      
Catg D1 Exception Values: 13,439,060   13,756,043      
Total Test Values (4): 110,836,460   111,177,743      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,558,887

Confidence Interval Values (5)

State Lower Limit: 105,618,856 (State Test Value minus Margin of Error Percent)
Local Test Value: 110,836,460 (Within Confidence Interval)
State Upper Limit: 116,736,630 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 126,719,854 (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