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2010 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 35,388,980 1.0469 33,803,592 10 982 .011254025
A 36,983,830 0.9612 38,476,727 15 614 .020660151
A 36,491,740 0.9162 39,829,448 13 363 .016210586
A 37,290,340 1.0355 36,011,917 18 188 .005430888
D3 78,123,440 0.9967 78,382,101 20 3,719 .056546866
F1 17,801,220 0.8366 21,278,054 9 173 .019959876
F1 18,850,650 0.7303 25,812,200 8 45 .033324336
F1 17,026,520 1.0840 15,707,122 7 13 .019181110
F1 16,588,120 0.9105 18,218,693 3 5 .055318289
L1 8,683,600 1.2183 7,127,637 10 199 .136395663
L1 8,013,930 1.1016 7,274,809 8 42 .035085314
L1 9,973,660 1.0043 9,930,957 6 18 .000297203
L1 7,755,680 1.0482 7,399,046 2 3 .001165570
Random Totals: 328,971,710   339,252,303 129 6,364  
Catg J Exception Values: 10,887,685   9,988,738      
Catg D1 Exception Values: 14,370,710   15,953,337      
Total Test Values (4): 354,230,105   365,194,378      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 18,259,719

Confidence Interval Values (5)

State Lower Limit: 346,934,659 (State Test Value minus Margin of Error Percent)
Local Test Value: 354,230,105 (Within Confidence Interval)
State Upper Limit: 383,454,097 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 390,851,915 (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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