taxes Property Tax Assistance

2019 Confidence Interval Detail

Zapata County
253-901/Zapata County ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 70,908,139 0.8634 82,126,638 13 1917 0.031242031
A 87,679,723 0.9062 96,755,377 13 1199 0.016862231
A 84,434,050 0.9180 91,976,089 13 674 0.011086931
A 91,015,792 0.9106 99,951,452 15 421 0.010895155
E 78,827,247 0.6562 120,126,862 13 2004 0.229925507
G1 92,133,435 1.0283 89,597,817 16 840 0.003420006
G1 92,260,655 1.0110 91,256,830 15 280 0.000301095
G1 92,389,443 1.0151 91,015,115 14 143 0.000285459
G1 91,471,585 1.0109 90,485,295 15 57 0.000395199
Random Totals: 781,120,069 853,291,475 127 7,535
CATG D1 EXCEPTION VALUES: 33,078,855 55,784,635
CATG J EXCEPTION VALUES: 48,571,043 49,073,407
Total Test Values(2) 862,769,967 958,149,517

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 47,907,476

Confidence Interval Values(5)

Local Test Value: 862,769,967 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 910,242,041 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,006,056,993 (State Test Value plus Margin of Error Percent)

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