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2011 Confidence Interval Detail
101/Harris
101-912/Houston ISD

Category Summary

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

Stratum
Variance
A 13,997,104,751 1.0102 13,855,775,837 41 134,599 .040201593
A 14,482,667,171 0.9534 15,190,546,645 44 59,774 .007365885
A 14,938,053,399 0.9525 15,682,995,694 42 30,836 .006732424
A 14,625,911,044 0.9522 15,360,125,020 41 11,259 .005332724
B 2,236,621,929 1.1187 1,999,304,486 50 4,114 .196042019
B 2,151,119,155 0.9647 2,229,832,233 14 322 .012748554
B 2,186,173,079 0.9675 2,259,610,418 12 110 .014225258
B 2,505,401,357 0.9534 2,627,859,615 10 62 .003546373
C 754,785,044 1.0282 734,083,879 12 16,105 .008171003
C 769,375,726 1.0287 747,910,689 14 3,000 .006273181
C 781,982,286 0.9679 807,916,403 10 775 .007426430
C 675,527,978 0.9229 731,962,269 10 104 .145146222
D3 352,622,672 0.9774 360,776,214 15 1,182 .002565816
F1 6,869,027,882 0.9001 7,631,405,268 28 9,647 .031605866
F1 6,802,981,115 0.8543 7,963,222,656 11 1,680 .096952786
F1 6,967,998,549 0.9604 7,255,308,777 10 356 .014194178
F1 7,356,504,834 1.0230 7,191,109,320 9 63 .000329011
L1 2,002,767,737 1.0277 1,948,786,355 10 12,636 .017701925
L1 2,007,347,360 0.9867 2,034,404,946 10 1,553 .008902713
L1 2,126,251,867 0.9935 2,140,162,926 10 416 .004573987
L1 2,028,098,957 0.9577 2,117,676,681 9 84 .003654204
Random Totals: 106,618,323,892   110,870,776,331 412 288,677  
Catg J Exception Values: 464,625,756   426,972,579      
Catg D1 Exception Values: 345,002   360,460      
Total Test Values (4): 107,083,294,650   111,298,109,370      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,564,905,469

Confidence Interval Values (5)

State Lower Limit: 105,733,203,901 (State Test Value minus Margin of Error Percent)
Local Test Value: 107,083,294,650 (Within Confidence Interval)
State Upper Limit: 116,863,014,839 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 106,369,378,720 (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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