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2008 Confidence Interval Detail
023/Briscoe
023-902/Silverton ISD

Category Summary

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

Stratum
Variance
A 2,229,160 0.9814 2,271,408 7 171 .005540605
A 2,254,230 1.1000 2,049,300 6 78 .006287268
A 2,247,780 1.0800 2,081,278 6 50 .001334669
A 2,168,940 1.0364 2,092,763 6 27 .006619517
D3 6,620,745 0.9753 6,788,419 22 1,736 .004222754
Random Totals: 15,520,855   15,283,168 47 2,062  
Catg D1 Exception Values: 33,943,660   31,405,480      
Total Test Values (4): 49,464,515   46,688,648      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,334,432

Confidence Interval Values (5)

State Lower Limit: 44,354,216 (State Test Value minus Margin of Error Percent)
State Upper Limit: 49,023,080 (State Test Value plus Margin of Error Percent)
Local Test Value: 49,464,515 (Outside Confidence Interval)
Value Assigned (6): 51,328,533 (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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