taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
253/Zapata
253-901/Zapata ISD

Category Summary

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

Stratum
Variance
A 75,650,663 0.8436 89,675,987 20 2,055 .091090562
A 77,552,320 0.9910 78,256,630 12 1,076 .085182191
A 78,672,449 0.8554 91,971,533 11 625 .016103058
A 69,588,721 0.9324 74,633,978 10 318 .028761947
G1 151,218,963 1.0312 146,643,680 10 952 .125270397
G1 151,267,170 0.9833 153,836,235 10 346 .010058655
G1 152,033,031 1.0227 148,658,483 10 179 .029915614
G1 150,009,364 0.9951 150,748,029 9 65 .011666256
Random Totals: 905,992,681   934,424,555 92 5,616  
Catg J Exception Values: 42,887,426   46,531,941      
Catg D1 Exception Values: 30,870,098   47,244,269      
Total Test Values (4): 979,750,205   1,028,200,765      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 51,410,038

Confidence Interval Values (5)

State Lower Limit: 976,790,727 (State Test Value minus Margin of Error Percent)
Local Test Value: 979,750,205 (Within Confidence Interval)
State Upper Limit: 1,079,610,803 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,264,564,081 (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