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2007 Confidence Interval Detail
101/Harris
101-907/Cypress-Fairbanks ISD

Category Summary

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

Stratum
Variance
A 4,776,832,110 0.9925 4,812,929,078 61 39,893 .005479941
A 4,783,515,452 0.9875 4,844,066,281 81 29,928 .003497297
A 4,754,082,643 0.9914 4,795,322,416 77 23,019 .005018701
A 4,770,926,989 0.9565 4,987,900,668 75 13,625 .006557544
B 335,157,775 0.9447 354,776,940 5 49 .007802689
B 345,681,179 0.8568 403,456,091 9 24 .043793301
B 634,667,098 0.9120 695,906,906 10 27 .004840169
C 145,848,715 0.8493 171,728,147 6 6,792 .070978160
C 145,824,935 0.6935 210,273,879 7 3,693 .455738787
C 146,456,122 1.0023 146,120,046 12 925 .034768539
C 145,141,812 0.8655 167,697,068 8 188 .062471087
D3 417,410,201 0.8172 510,780,961 10 1,331 .544467128
F1 1,330,149,319 0.9069 1,466,698,995 23 1,647 .029362958
F1 1,326,514,088 0.7973 1,663,757,793 19 516 .059896541
F1 1,338,094,854 0.7967 1,679,546,698 14 212 .043693986
F1 1,309,844,854 0.8175 1,602,256,702 17 74 .077994804
L1 665,860,763 1.0598 628,289,076 8 3,480 .021871825
L1 668,428,362 1.0101 661,744,740 6 497 .000728743
L1 676,794,081 1.0456 647,278,195 7 156 .006074980
L1 659,732,995 1.0062 655,667,854 7 39 .000831026
Random Totals: 29,376,964,347   31,106,198,534 462 126,115  
Catg D1 Exception Values: 6,912,801   6,902,203      
Total Test Values (4): 29,383,877,148   31,113,100,737      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,555,655,037

Confidence Interval Values (5)

Local Test Value: 29,383,877,148 (Outside Confidence Interval)
State Lower Limit: 29,557,445,700 (State Test Value minus Margin of Error Percent)
State Upper Limit: 32,668,755,774 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 31,015,872,693 (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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