taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
084/Galveston
084-911/Friendswood ISD

Category Summary

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

Stratum
Variance
A 493,536,881 0.8624 572,283,025 135 3,148 .014463390
A 506,540,253 0.8645 585,934,359 89 2,033 .012805215
A 557,144,098 0.8848 629,683,655 95 1,659 .012999441
A 599,620,392 0.9290 645,447,139 69 1,079 .011655985
F1 36,278,305 1.0331 35,115,967 9 115 .031813873
F1 32,980,770 1.1143 29,597,747 8 45 .013159434
F1 37,436,520 0.8921 41,964,488 7 25 .114306761
F1 37,201,070 1.0138 36,694,683 4 8 .016132774
Random Totals: 2,300,738,289   2,576,721,063 416 8,112  
Catg D1 Exception Values: 76,767   83,594      
Total Test Values (4): 2,300,815,056   2,576,804,657      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 128,840,233

Confidence Interval Values (5)

Local Test Value: 2,300,815,056 (Outside Confidence Interval)
State Lower Limit: 2,447,964,424 (State Test Value minus Margin of Error Percent)
State Upper Limit: 2,705,644,890 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,332,526,431 (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