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2011 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 52,297,028 1.0844 48,226,695 15 1,032 .090860572
A 52,957,370 0.9346 56,663,139 18 598 .026680989
A 52,509,560 1.0719 48,987,368 15 407 .049461096
A 52,102,650 1.0279 50,688,442 10 219 .020476844
D3 110,138,509 1.0611 103,796,540 23 4,137 .022128295
F1 7,907,180 0.9560 8,271,109 9 103 .008034903
F1 8,099,810 0.8340 9,712,002 8 41 .038025891
F1 15,120,805 0.9582 15,780,427 10 23 .016932412
G1 16,190,770 1.0143 15,962,506 8 49 .019160240
G1 17,154,030 1.0545 16,267,454 6 15 .013792564
G1 17,661,140 1.0292 17,160,066 3 5 .004244459
Random Totals: 402,138,852   391,515,748 125 6,629  
Catg D1 Exception Values: 10,844,048   7,675,394      
Catg G1 Exception Values: 12,368,092   12,608,044      
Total Test Values (4): 425,350,992   411,799,186      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 20,589,959

Confidence Interval Values (5)

State Lower Limit: 391,209,227 (State Test Value minus Margin of Error Percent)
Local Test Value: 425,350,992 (Within Confidence Interval)
State Upper Limit: 432,389,145 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 405,645,061 (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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