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2007 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 336,482,397 0.9783 343,946,026 20 4,602 .011604325
A 336,776,218 0.9851 341,870,082 23 2,799 .001843184
A 336,544,482 1.0010 336,208,274 26 2,217 .001797701
A 336,054,847 0.9938 338,151,386 24 1,417 .002753014
C 27,430,010 0.8513 32,221,320 9 2,602 .353863529
C 27,424,391 0.9338 29,368,592 8 974 .076243519
C 27,420,701 0.9615 28,518,670 10 514 .038900328
C 27,386,611 0.9744 28,106,128 6 69 .001129992
F1 67,955,436 0.9318 72,929,208 7 337 .038985711
F1 68,468,263 1.0312 66,396,686 6 89 .011295380
F1 69,208,798 0.8697 79,577,783 6 35 .008770974
F1 65,444,295 0.9321 70,211,667 4 9 .000688036
L1 31,123,649 1.0101 30,812,443 8 525 .003542142
L1 31,164,857 0.9838 31,678,041 9 101 .023659801
L1 31,700,432 0.9857 32,160,325 5 22 .010127011
L1 30,063,973 0.9158 32,828,099 3 5 .024692610
Random Totals: 1,850,649,360   1,894,984,730 174 16,317  
Catg D1 Exception Values: 1,028,847   950,985      
Total Test Values (4): 1,851,678,207   1,895,935,715      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 94,796,786

Confidence Interval Values (5)

State Lower Limit: 1,801,138,929 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,851,678,207 (Within Confidence Interval)
State Upper Limit: 1,990,732,501 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,159,806,022 (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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