taxes Property Tax Assistance

2019 Confidence Interval Detail

Presidio County
189-901/Marfa ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 35,060,120 0.5203 67,384,432 14 442 0.082949569
A 35,477,200 0.8791 40,356,273 15 254 0.078274070
A 29,873,340 0.8835 33,812,496 14 142 0.081794275
A 35,865,995 0.9389 38,200,016 15 85 0.045219153
E 39,331,146 1.0668 36,868,341 20 645 0.791950593
F1 9,912,963 0.9519 10,413,870 9 79 0.013144929
F1 10,324,800 1.0098 10,224,599 8 30 0.003748470
F1 9,334,256 0.9905 9,423,782 4 7 0.002608864
Random Totals: 205,179,820 246,683,809 99 1,684
CATG D1 EXCEPTION VALUES: 11,693,918 18,942,150
CATG F1 EXCEPTION VALUES: 9,000,000 11,268,001
CATG J EXCEPTION VALUES: 43,849,267 44,336,222
Total Test Values(3) 269,723,005 321,230,182

Margin of Error

Margin of Error Percent: 6.0560233
Margin of Error Value: 19,453,775

Confidence Interval Values(5)

Local Test Value: 269,723,005 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 301,776,407 (State Test Value minus Margin of Error Percent)
State Upper Limit: 340,683,957 (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