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2006 Confidence Interval Detail
072/Erath
072-910/Morgan Mill ISD

Category Summary

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

Stratum
Variance
A 1,347,355 0.9309 1,447,368 7 36 .025333127
A 1,274,900 0.9410 1,354,835 8 21 .036007833
A 1,312,164 0.9589 1,368,405 7 16 .027924196
A 1,056,421 0.8882 1,189,395 6 8 .019240622
D3 31,823,980 0.9517 33,439,088 22 1,026 .105886346
G1 2,329,390 1.1095 2,099,495 5 20 .002522722
G1 2,167,470 1.0419 2,080,305 4 9 .021473994
G1 2,143,260 1.0166 2,108,263 3 6 .014006489
G1 2,100,970 1.1311 1,857,457 3 4 .005229996
Random Totals: 45,555,910   46,944,611 65 1,146  
Catg J Exception Values: 1,372,500   1,235,221      
Catg D1 Exception Values: 4,481,820   3,760,825      
Total Test Values (4): 51,410,230   51,940,657      

Margin of Error

Margin of Error Percent: 8.8727526
Margin of Error Value: 4,608,566

Confidence Interval Values (5)

State Lower Limit: 47,332,091 (State Test Value minus Margin of Error Percent)
Local Test Value: 51,410,230 (Within Confidence Interval)
State Upper Limit: 56,549,223 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,792,565 (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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