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2010 Confidence Interval Detail
002/Andrews
002-901/Andrews ISD

Category Summary

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

Stratum
Variance
A 103,081,540 0.9132 112,879,479 22 1,670 .027636368
A 95,411,580 0.9464 100,815,279 31 952 .020624769
A 102,919,850 0.9502 108,313,881 26 679 .008411161
A 106,324,660 0.9415 112,931,131 12 389 .004372292
G1 766,815,395 1.0293 744,987,268 15 496 .016089895
G1 778,710,084 1.0471 743,682,632 17 63 .006900476
G1 857,477,544 1.0497 816,878,674 10 11 .007889773
Random Totals: 2,810,740,653   2,740,488,344 133 4,260  
Catg J Exception Values: 25,810,751   24,844,050      
Catg D1 Exception Values: 11,114,340   28,417,891      
Catg G1 Exception Values: 644,320,046   638,003,269      
Total Test Values (4): 3,491,985,790   3,431,753,554      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 171,587,678

Confidence Interval Values (5)

State Lower Limit: 3,260,165,876 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,491,985,790 (Within Confidence Interval)
State Upper Limit: 3,603,341,232 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,765,328,630 (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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