taxes Property Tax Assistance

2017 Confidence Interval Detail

084/Galveston
084-903/High Island ISD

Category Summary

(1) Category	(1) Local Value	(1) Stratum Ratio	(1) State Value	(2) Sample Size	(3) Total Parcels	Stratum Variance
A	13,259,091	0.8018	16,536,656	8	218	.024673385
A	10,859,993	0.9173	11,839,085	10	71	.014989958
A	16,326,760	1.0417	15,673,188	9	67	.002422679
A	22,540,580	1.0386	21,702,850	9	51	.007979920
C1	7,307,588	0.9159	7,978,587	10	819	.040539080
C1	4,747,820	0.9923	4,784,662	10	288	.028433328
C1	9,744,631	0.9853	9,890,014	9	342	.024258465
C1	13,393,900	0.9595	13,959,250	9	111	.004431695
E	8,353,619	1.0222	8,172,196	10	297	.005939021
G1	1,809,780	0.9879	1,831,947	10	20	.005150748
Random Totals:	108,343,762		112,368,435	94	2,284
Catg D1 Exception Values:	123,649		100,910
Catg G1 Exception Values:	2,659,529		2,615,125
Total Test Values (4):	111,126,940		115,084,470

Margin of Error

Margin of Error Percent:	5.0000000
Margin of Error Value:	5,754,223

Confidence Interval Values (5)

State Lower Limit:	109,330,247	(State Test Value minus Margin of Error Percent)
Local Test Value:	111,126,940	(Within Confidence Interval)
State Upper Limit:	120,838,693	(State Test Value plus Margin of Error Percent)
Value Assigned (6):	120,665,353	(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