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2011 Confidence Interval Detail
101/Harris
101-914/Katy ISD

Category Summary

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

Stratum
Variance
A 1,633,842,329 0.9585 1,704,582,503 26 15,797 .020379225
A 1,724,474,742 0.9608 1,794,832,163 38 12,616 .004521361
A 1,643,203,479 0.9417 1,744,933,077 39 8,508 .008874184
A 1,752,751,204 0.9400 1,864,628,940 43 4,716 .006758469
B 161,486,493 0.9615 167,952,671 9 23 .008135433
B 202,620,873 0.9649 209,991,577 8 13 .002373044
B 119,933,950 0.9987 120,090,067 6 6 .005123188
B 164,310,971 1.0392 158,112,944 4 7 .003713958
C 61,621,947 0.9605 64,156,113 11 560 .018746326
C 67,048,969 0.9575 70,025,033 9 97 .012967409
C 53,441,942 1.1024 48,477,814 9 32 .040287238
C 64,183,745 1.0997 58,364,777 12 17 .055506413
F1 781,363,909 1.0036 778,561,089 8 633 .004523564
F1 786,994,642 0.9597 820,042,349 9 150 .002420467
F1 717,833,774 0.9579 749,382,789 8 45 .014836711
F1 843,149,328 0.8376 1,006,625,272 6 12 .026640909
L1 201,072,847 0.9923 202,633,122 9 1,192 .006701553
L1 235,642,032 0.9696 243,030,149 9 125 .001665689
L1 148,994,590 0.9390 158,673,685 7 15 .006678526
Random Totals: 11,363,971,766   11,965,096,134 270 44,564  
Catg D1 Exception Values: 2,835,890   2,786,609      
Catg L1 Exception Values: 138,219,641   138,253,101      
Total Test Values (4): 11,505,027,297   12,106,135,844      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 605,306,792

Confidence Interval Values (5)

State Lower Limit: 11,500,829,052 (State Test Value minus Margin of Error Percent)
Local Test Value: 11,505,027,297 (Within Confidence Interval)
State Upper Limit: 12,711,442,636 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 12,074,731,294 (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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