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2008 Confidence Interval Detail
084/Galveston
084-901/Dickinson ISD

Category Summary

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

Stratum
Variance
A 343,995,670 0.8660 397,223,637 21 4,816 .021258541
A 346,380,290 0.9488 365,071,975 24 3,008 .008466330
A 362,733,560 0.9873 367,399,534 22 2,511 .007004842
A 383,473,310 0.9698 395,414,838 12 1,742 .004563856
C 30,854,072 0.9350 32,999,007 7 2,883 .019531157
C 29,855,239 0.9369 31,865,982 7 1,030 .015258075
C 28,030,009 0.8425 33,270,040 7 309 .086557232
C 27,998,530 0.8827 31,719,191 6 46 .016528730
F1 333,257,112 0.9822 339,296,591 18 912 .010982158
L1 32,523,840 1.0387 31,312,063 7 535 .009139805
L1 30,271,365 1.0560 28,666,065 7 98 .015751866
L1 36,156,688 1.0436 34,646,117 5 29 .014203577
L1 47,991,160 1.1151 43,037,539 3 8 .071660002
Random Totals: 2,033,520,845   2,131,922,579 146 17,927  
Catg D1 Exception Values: 1,022,138   998,093      
Total Test Values (4): 2,034,542,983   2,132,920,672      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 106,646,034

Confidence Interval Values (5)

State Lower Limit: 2,026,274,638 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,034,542,983 (Within Confidence Interval)
State Upper Limit: 2,239,566,706 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,347,273,950 (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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