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2008 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 46,768,800 0.8879 52,673,499 9 1,221 .055878689
A 106,876,820 1.0142 105,380,418 17 1,522 .045700312
A 77,759,640 0.9185 84,659,379 18 661 .012098108
A 126,132,310 0.9026 139,743,308 22 559 .010422949
G1 859,306,948 0.9993 859,908,884 17 431 .006753627
G1 882,905,600 1.0163 868,745,056 15 51 .003347839
G1 908,974,680 0.9955 913,083,556 10 11 .001174744
Random Totals: 3,008,724,798   3,024,194,100 108 4,456  
Catg D1 Exception Values: 10,247,736   23,815,358      
Catg G1 Exception Values: 778,744,001   778,575,470      
Total Test Values (4): 3,797,716,535   3,826,584,928      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 191,329,246

Confidence Interval Values (5)

State Lower Limit: 3,635,255,682 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,797,716,535 (Within Confidence Interval)
State Upper Limit: 4,017,914,174 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,043,600,756 (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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