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2007 Confidence Interval Detail
250/Wood
250-904/Quitman ISD

Category Summary

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

Stratum
Variance
A 44,902,507 1.0502 42,756,148 17 987 .026352015
A 44,835,839 0.9897 45,302,454 12 541 .011024477
A 44,953,780 1.0431 43,096,328 11 383 .006099779
A 44,758,288 0.9242 48,429,223 12 226 .022507226
D3 99,268,634 0.9782 101,480,918 25 2,058 .172844952
F1 7,636,967 0.8787 8,691,211 7 96 .075481248
F1 7,781,157 0.9763 7,970,047 7 40 .018877451
F1 8,052,814 0.7092 11,354,786 5 16 .087561471
F1 6,928,163 0.7389 9,376,320 3 6 .080954107
G1 19,679,411 1.0238 19,221,929 8 69 .015635147
G1 19,060,950 1.1520 16,545,964 6 20 .020822000
G1 22,076,680 1.0192 21,660,793 4 7 .007911585
Random Totals: 369,935,190   375,886,121 117 4,449  
Catg D1 Exception Values: 11,069,030   7,133,469      
Catg G1 Exception Values: 16,492,362   17,070,477      
Total Test Values (4): 397,496,582   400,090,067      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 20,004,503

Confidence Interval Values (5)

State Lower Limit: 380,085,564 (State Test Value minus Margin of Error Percent)
Local Test Value: 397,496,582 (Within Confidence Interval)
State Upper Limit: 420,094,570 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 388,400,599 (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

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