taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
084/Galveston
084-904/La Marque ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 229,019,596 0.9523 240,491,018 72 4,091 .045420726
A 218,846,526 0.9148 239,228,822 56 2,168 .013978949
A 239,164,521 0.9441 253,325,412 79 1,337 .016678536
A 322,400,138 0.9556 337,379,801 67 840 .009356316
B 18,683,355 1.0847 17,224,445 9 36 .006047499
B 18,440,410 0.7962 23,160,525 4 5 .066388821
F1 38,699,048 0.9461 40,903,761 10 277 .050159233
F1 39,852,220 1.0492 37,983,435 9 77 .010646057
F1 35,968,950 0.7561 47,571,684 7 24 .112952797
F1 42,964,290 1.0436 41,169,308 4 7 .000498160
L1 28,552,680 1.0103 28,261,586 10 273 .006070205
L1 30,065,872 1.0326 29,116,669 8 44 .003263457
L1 25,412,410 0.9836 25,836,122 4 8 .001622757
Random Totals: 1,288,070,016   1,361,652,588 339 9,187  
Catg D1 Exception Values: 87,330   75,517      
Catg B Exception Values: 29,685,350   27,202,824      
Catg L1 Exception Values: 28,709,370   27,618,202      
Total Test Values (4): 1,346,552,066   1,416,549,131      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 70,827,456

Confidence Interval Values (5)

State Lower Limit: 1,345,721,675 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,346,552,066 (Within Confidence Interval)
State Upper Limit: 1,487,376,587 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,517,989,509 (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