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2007 Confidence Interval Detail
054/Crosby
054-903/Ralls ISD

Category Summary

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

Stratum
Variance
A 7,022,051 0.9679 7,254,934 15 320 .129349043
A 7,043,296 0.9218 7,640,807 15 172 .024899772
A 6,991,914 0.8808 7,938,140 15 108 .039974121
A 6,974,470 1.0098 6,906,784 13 54 .012245844
D3 6,850,520 0.7417 9,236,241 17 1,390 .034890672
F1 1,020,862 0.9582 1,065,396 6 49 .003530218
F1 1,074,475 0.9461 1,135,689 6 17 .013213147
F1 1,041,437 0.9306 1,119,103 4 8 .002154912
F1 946,502 0.9638 982,052 2 3 .002056198
G1 4,038,786 1.1836 3,412,290 18 21 .150520293
Random Totals: 43,004,313   46,691,436 111 2,142  
Catg D1 Exception Values: 16,204,230   17,669,128      
Catg G1 Exception Values: 22,348,388   21,820,209      
Total Test Values (4): 81,556,931   86,180,773      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 4,309,039

Confidence Interval Values (5)

Local Test Value: 81,556,931 (Outside Confidence Interval)
State Lower Limit: 81,871,734 (State Test Value minus Margin of Error Percent)
State Upper Limit: 90,489,812 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 89,894,467 (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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