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2007 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 66,460,093 0.9428 70,492,250 7 1,575 .025352998
A 66,527,562 0.8253 80,610,156 9 919 .027397746
A 66,489,980 0.9279 71,656,407 7 577 .011210711
A 66,360,147 0.9338 71,064,625 10 304 .004753097
G1 732,531,136 1.0035 729,976,219 7 402 .000866183
G1 744,627,800 1.0262 725,616,644 6 49 .002874762
G1 755,090,465 0.8939 844,714,694 4 11 .043390922
Random Totals: 2,498,087,183   2,594,130,995 50 3,837  
Catg D1 Exception Values: 9,524,847   22,283,135      
Catg G1 Exception Values: 672,527,831   696,038,732      
Total Test Values (4): 3,180,139,861   3,312,452,862      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 165,622,643

Confidence Interval Values (5)

State Lower Limit: 3,146,830,219 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,180,139,861 (Within Confidence Interval)
State Upper Limit: 3,478,075,505 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,393,947,392 (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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