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2006 Confidence Interval Detail
184/Parker
184-909/Brock ISD

Category Summary

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

Stratum
Variance
A 23,970,221 0.9683 24,754,953 9 226 .013197870
A 23,921,043 1.0048 23,806,771 34 128 .002183402
A 23,918,789 1.0143 23,581,573 10 87 .001361487
A 23,798,215 0.9338 25,485,345 7 50 .017257769
D3 98,974,760 1.0473 94,504,688 20 2,052 .007909719
Random Totals: 194,583,028   192,133,330 80 2,543  
Catg D1 Exception Values: 4,414,100   3,431,702      
Total Test Values (4): 198,997,128   195,565,032      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 9,778,252

Confidence Interval Values (5)

State Lower Limit: 185,786,780 (State Test Value minus Margin of Error Percent)
Local Test Value: 198,997,128 (Within Confidence Interval)
State Upper Limit: 205,343,284 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 230,952,741 (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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