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2009 Confidence Interval Detail
101/Harris
101-902/Aldine ISD

Category Summary

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

Stratum
Variance
A 1,679,142,529 1.0459 1,605,452,270 51 21,764 .041652118
A 993,778,906 1.0763 923,328,910 45 10,265 .030106791
A 804,803,156 1.0588 760,108,761 47 7,051 .018404593
A 781,750,671 1.0564 740,013,888 44 4,795 .034115524
B 174,067,059 0.9208 189,038,943 6 75 .019424748
B 107,882,023 0.9519 113,333,357 7 25 .005056887
B 153,956,816 0.9505 161,974,557 6 28 .012192012
B 217,803,099 0.9814 221,931,016 9 25 .004376065
C 81,404,831 0.8955 90,904,334 7 4,876 .109692083
C 85,600,135 1.0784 79,376,980 9 1,429 .077906543
C 86,956,207 0.9231 94,200,203 7 418 .030320547
C 94,773,993 0.9578 98,949,669 7 114 .013062829
D3 239,943,823 1.0299 232,977,787 10 758 .006946338
F1 953,917,404 1.0532 905,732,438 20 1,492 .107272890
F1 979,792,392 0.9478 1,033,754,370 12 328 .016862275
F1 929,353,948 0.9771 951,134,938 11 102 .015955147
F1 801,700,610 0.9514 842,653,574 9 31 .004490664
L1 588,983,921 0.9827 599,352,723 9 1,745 .017006057
L1 664,406,974 0.9845 674,867,419 11 197 .002199909
L1 826,148,839 0.9554 864,715,134 7 64 .009396387
L1 562,691,152 0.9421 597,273,275 5 11 .012977115
Random Totals: 11,808,858,488   11,781,074,546 339 55,593  
Catg D1 Exception Values: 486,578   429,962      
Total Test Values (4): 11,809,345,066   11,781,504,508      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 589,075,225

Confidence Interval Values (5)

State Lower Limit: 11,192,429,283 (State Test Value minus Margin of Error Percent)
Local Test Value: 11,809,345,066 (Within Confidence Interval)
State Upper Limit: 12,370,579,733 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,397,905,143 (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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