taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
242/Wheeler
242-902/Shamrock ISD

Category Summary

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

Stratum
Variance
A 9,077,700 0.9158 9,912,317 10 420 .027579423
A 8,362,400 0.9337 8,956,196 9 172 .015648168
A 9,133,240 0.9227 9,898,385 11 130 .024225097
A 8,089,800 0.9160 8,831,659 9 71 .045219399
E 17,704,790 0.9479 18,677,909 15 355 .062217265
F1 9,165,870 0.9205 9,957,490 9 103 .022042260
F1 5,036,940 0.9302 5,414,900 4 5 .010972479
G1 7,594,650 0.9582 7,925,955 9 109 .051813088
G1 7,812,860 1.0266 7,610,423 8 34 .034922781
G1 8,642,250 1.0367 8,336,308 6 13 .021246305
G1 6,291,621 1.0173 6,184,627 2 3 .004974129
L1 5,121,250 1.0680 4,795,178 9 98 .047448901
L1 4,962,640 1.0343 4,798,066 7 20 .006107653
L1 7,628,750 1.0660 7,156,426 4 9 .002245445
Random Totals: 114,624,761   118,455,839 112 1,542  
Catg J Exception Values: 2,093,700   1,969,131      
Catg D1 Exception Values: 8,926,320   10,753,335      
Catg F1 Exception Values: 13,822,860   14,849,809      
Catg L1 Exception Values: 7,643,490   7,067,096      
Total Test Values (4): 147,111,131   153,095,210      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 7,654,761

Confidence Interval Values (5)

State Lower Limit: 145,440,449 (State Test Value minus Margin of Error Percent)
Local Test Value: 147,111,131 (Within Confidence Interval)
State Upper Limit: 160,749,971 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 170,029,963 (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