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2008 Confidence Interval Detail
101/Harris
101-910/Galena Park ISD

Category Summary

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

Stratum
Variance
A 412,288,367 0.9655 427,020,577 30 6,295 .007704289
A 396,317,246 0.9882 401,049,632 30 4,365 .008364956
A 428,037,799 0.9950 430,188,743 30 3,820 .004592883
A 420,706,975 1.0177 413,389,972 29 2,481 .004377627
B 42,523,524 0.7339 57,941,850 9 99 .080923705
B 43,263,022 0.5279 81,953,063 2 9 .091953568
B 40,732,624 0.7397 55,066,411 2 6 .004582319
B 81,208,614 0.8450 96,104,869 2 7 .004935108
F1 86,015,577 0.8985 95,732,417 9 441 .234097807
F1 94,170,649 1.0287 91,543,355 7 124 .008614430
F1 91,858,770 1.0147 90,528,008 6 41 .005899920
F1 103,555,110 1.0326 100,285,793 4 14 .000576793
L1 79,592,479 0.9949 80,000,481 8 509 .005619981
L1 70,689,805 0.9194 76,886,888 8 40 .008755983
L1 193,181,660 1.0197 189,449,505 6 16 .003395157
Random Totals: 2,584,142,221   2,687,141,564 182 18,267  
Catg D1 Exception Values: 88,330   89,120      
Total Test Values (4): 2,584,230,551   2,687,230,684      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 134,361,534

Confidence Interval Values (5)

State Lower Limit: 2,552,869,150 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,584,230,551 (Within Confidence Interval)
State Upper Limit: 2,821,592,218 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,669,758,234 (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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