taxes Property Tax Assistance

2017 Confidence Interval Detail

022/Brewster
022-901/Alpine ISD

Category Summary

(1) Category	(1) Local Value	(1) Stratum Ratio	(1) State Value	(2) Sample Size	(3) Total Parcels	Stratum Variance
A	77,856,581	0.8752	88,958,616	15	983	.051890994
A	87,302,137	0.9311	93,762,364	15	598	.013574395
A	89,966,192	0.9838	91,447,644	15	441	.008092828
A	102,674,883	1.0143	101,227,332	16	341	.069627606
E	49,677,263	0.8523	58,286,123	24	6,270	.042613974
F1	17,096,715	0.9764	17,509,950	15	133	.059048258
F1	14,357,981	0.9619	14,926,688	13	45	.032033470
F1	15,518,631	0.9582	16,195,607	16	19	.034040005
L1	8,408,112	0.8119	10,356,093	9	109	.155010969
L1	6,689,083	0.9439	7,086,644	6	15	.060459729
L1	7,023,865	1.0447	6,723,332	3	6	.002738991
Random Totals:	476,571,443		506,480,393	147	8,960
Catg J Exception Values:	34,138,530		33,191,216
Catg D1 Exception Values:	17,902,086		14,298,734
Catg F1 Exception Values:	26,411,241		29,286,018
Catg L1 Exception Values:	9,592,082		8,601,253
Total Test Values (4):	564,615,382		591,857,614

Margin of Error

Margin of Error Percent:	5.0000000
Margin of Error Value:	29,592,880

Confidence Interval Values (5)

State Lower Limit:	562,264,734	(State Test Value minus Margin of Error Percent)
Local Test Value:	564,615,382	(Within Confidence Interval)
State Upper Limit:	621,450,494	(State Test Value plus Margin of Error Percent)
Value Assigned (6):	580,669,521	(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, 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
(6) Includes local value of unstudied property categories and sub-categories