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2007 Confidence Interval Detail
113/Houston
113-901/Crockett ISD

Category Summary

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

Stratum
Variance
A 34,334,958 0.9083 37,801,341 15 989 .043798372
A 34,436,147 0.9799 35,142,511 17 613 .003048623
A 34,209,320 0.9769 35,018,241 29 374 .001182047
A 34,299,279 1.0113 33,916,028 17 186 .005186951
D3 71,206,970 0.9688 73,500,175 28 3,609 .004008258
F1 16,399,069 1.0096 16,243,135 16 172 .001600049
F1 16,420,481 0.9236 17,778,780 15 46 .014844833
F1 17,176,799 1.0017 17,147,648 8 15 .000581259
L1 8,518,652 1.0035 8,488,941 7 192 .002369903
L1 8,580,698 1.0384 8,263,384 6 51 .002704001
L1 8,384,503 1.1356 7,383,324 5 21 .051729521
L1 8,234,261 1.0493 7,847,385 3 5 .000336334
Random Totals: 292,201,137   298,530,893 166 6,273  
Catg J Exception Values: 14,037,138   13,515,697      
Catg D1 Exception Values: 14,070,920   14,665,287      
Catg F1 Exception Values: 15,968,070   16,401,648      
Total Test Values (4): 336,277,265   343,113,525      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 17,155,676

Confidence Interval Values (5)

State Lower Limit: 325,957,849 (State Test Value minus Margin of Error Percent)
Local Test Value: 336,277,265 (Within Confidence Interval)
State Upper Limit: 360,269,201 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 325,163,500 (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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