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2007 Confidence Interval Detail
101/Harris
101-913/Humble ISD

Category Summary

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

Stratum
Variance
A 1,869,123,455 0.9950 1,878,516,035 67 14,377 .004518352
A 1,868,966,335 0.9983 1,872,148,988 80 10,817 .005304418
A 1,869,149,645 0.9903 1,887,457,987 74 8,144 .005362420
A 1,868,614,363 0.9910 1,885,584,625 77 4,666 .005389166
B 76,206,963 0.9130 83,468,744 13 35 .023432277
B 153,211,380 0.9465 161,871,506 5 14 .006772797
C 54,049,236 0.8646 62,513,574 15 3,323 .066624561
C 54,040,941 0.7917 68,259,367 16 1,729 .108945480
C 54,212,486 0.9088 59,652,824 16 742 .014521135
C 53,793,971 0.7374 72,950,869 16 123 .062269702
F1 259,093,007 0.8247 314,166,372 8 451 .022183266
F1 260,482,861 0.8741 298,001,214 9 144 .023180173
F1 263,161,598 0.9504 276,895,621 7 66 .002253434
F1 248,258,204 0.9126 272,033,973 5 19 .008247211
L1 87,984,307 0.9693 90,770,976 8 1,231 .001765630
L1 88,694,439 0.9598 92,409,293 9 190 .002162806
L1 92,792,475 0.9488 97,799,826 8 47 .039199976
L1 85,133,194 0.9558 89,070,092 6 16 .004156872
Random Totals: 9,306,968,860   9,563,571,886 439 46,134  
Catg D1 Exception Values: 14,160,114   14,133,473      
Catg B Exception Values: 79,017,459   94,653,930      
Total Test Values (4): 9,400,146,433   9,672,359,289      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 483,617,964

Confidence Interval Values (5)

State Lower Limit: 9,188,741,325 (State Test Value minus Margin of Error Percent)
Local Test Value: 9,400,146,433 (Within Confidence Interval)
State Upper Limit: 10,155,977,253 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,868,746,218 (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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