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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 0.9568 1,707,611,130 27 15,797 .019739683
A 1,724,474,742 0.9608 1,794,832,163 38 12,616 .004521361
A 1,643,203,479 0.9397 1,748,646,886 40 8,508 .008854383
A 1,752,751,204 0.9400 1,864,628,940 43 4,716 .006758469
B 161,486,493 0.9319 173,287,362 9 23 .018931149
B 202,620,873 0.9611 210,821,843 8 13 .002511051
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 0.9591 64,249,762 12 560 .020046369
C 67,048,969 0.9535 70,318,793 10 97 .016873669
C 53,441,942 0.9732 54,913,627 10 32 .120748214
C 64,183,745 0.9794 65,533,740 11 17 .051253574
F1 781,363,909 0.8682 899,981,466 10 633 .134439096
F1 786,994,642 0.9281 847,963,196 9 150 .010236102
F1 717,833,774 0.9413 762,598,294 8 45 .016518023
F1 843,149,328 0.8059 1,046,220,782 6 12 .033447626
L1 201,072,847 1.0319 194,856,912 10 1,192 .073246733
L1 235,642,032 0.9695 243,055,216 9 125 .001665583
L1 148,994,590 0.9040 164,817,024 7 15 .017333441
Random Totals: 11,363,971,766   12,192,540,147 277 44,564  
Catg D1 Exception Values: 2,505,208   2,604,538      
Catg L1 Exception Values: 138,219,641   138,253,101      
Total Test Values (4): 11,504,696,615   12,333,397,786      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 616,669,889

Confidence Interval Values (5)

Local Test Value: 11,504,696,615 (Outside Confidence Interval)
State Lower Limit: 11,716,727,897 (State Test Value minus Margin of Error Percent)
State Upper Limit: 12,950,067,675 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 12,078,783,192 (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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