taxes Property Tax Assistance

2020 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 83,297,236 0.8514 97,835,607 13 2,098 0.033100661
A 83,964,737 0.9428 89,058,906 14 1,071 0.019906570
A 83,725,297 0.9507 88,067,000 12 633 0.023563081
A 83,049,510 0.9359 88,737,589 12 373 0.030164635
E 89,558,057 0.4389 204,051,167 20 2,240 0.482591740
F1 14,609,319 0.7925 18,434,472 10 181 0.106693291
F1 13,512,702 0.8851 15,266,865 9 73 0.075765345
F1 13,676,884 0.8000 17,096,105 8 44 0.071778787
F1 11,837,571 0.5631 21,022,147 7 17 0.330132919
G1 51,433,782 0.9538 53,925,123 11 1,096 0.013432886
G1 51,514,404 1.0220 50,405,483 10 262 0.002002357
G1 51,633,703 1.0446 49,429,162 9 123 0.006002731
G1 50,891,918 1.0000 50,891,918 9 46 0.000776675
Random Totals: 682,705,120 844,221,544 144 8,257
CATG D1 EXCEPTION VALUES: 32,950,451 57,299,235
Total Test Values 715,655,571 901,520,779

Margin of Error

Margin of Error Percent: 7.1790074
Margin of Error Value: 64,720,243

Confidence Interval Values(5)

Local Test Value: 715,655,571 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 836,800,536 (State Test Value minus Margin of Error Percent)
State Upper Limit: 966,241,022 (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