taxes Property Tax Assistance

2016 Confidence Interval Detail

189/Presidio
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	28,464,890	0.6807	41,817,085	15	421	.221864285
A	27,442,650	0.7510	36,541,478	15	236	.222183045
A	27,223,560	0.9985	27,264,457	15	159	.031596617
A	30,410,670	0.9413	32,307,097	15	91	.044771199
E	36,282,988	0.8906	40,739,937	20	619	.013141207
F1	10,420,290	0.9462	11,012,777	9	88	.044783642
F1	5,352,920	0.9378	5,707,955	8	20	.005927530
F1	5,872,000	0.9209	6,376,371	5	8	.031437869
F1	11,631,260	0.9440	12,321,250	2	4	.001524361
L1	3,905,940	1.0126	3,857,338	7	15	.000493839
L1	798,220	0.9893	806,853	3	1	.000032556
Random Totals:	187,805,388		218,752,598	114	1,662
Catg D1 Exception Values:	11,589,202		13,514,261
Catg L1 Exception Values:	58,716,940		58,991,800
Total Test Values (4):	258,111,530		291,258,659

Margin of Error

Margin of Error Percent:	5.0000000
Margin of Error Value:	14,562,932

Confidence Interval Values (5)

Local Test Value:	258,111,530	(Outside Confidence Interval)
State Lower Limit:	276,695,727	(State Test Value minus Margin of Error Percent)
State Upper Limit:	305,821,591	(State Test Value plus Margin of Error Percent)
Value Assigned (6):	279,572,607	(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