taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
090/Gray
033-901/Groom ISD

Category Summary

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

Stratum
Variance
E 2,290,770 0.8598 2,664,306 13 50 .073640529
G1 1,822,960 0.9531 1,912,664 15 21 .024218172
Random Totals: 4,113,730   4,576,970 28 71  
Catg J Exception Values: 307,785   293,928      
Catg D1 Exception Values: 2,686,120   1,621,656      
Catg G1 Exception Values: 2,834,830   2,700,122      
Total Test Values (4): 9,942,465   9,192,676      

Margin of Error

Margin of Error Percent: 5.0000022
Margin of Error Value: 459,634

Confidence Interval Values (5)

State Lower Limit: 8,733,042 (State Test Value minus Margin of Error Percent)
State Upper Limit: 9,652,310 (State Test Value plus Margin of Error Percent)
Local Test Value: 9,942,465 (Outside Confidence Interval)
Value Assigned (6): 16,051,436 (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