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2011 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 40,446,050 0.9964 40,592,182 12 310 .004102187
A 45,741,510 0.9963 45,911,382 12 230 .004052397
A 45,233,260 0.9711 46,579,405 11 157 .000822604
A 47,148,070 1.0163 46,391,882 11 111 .003034938
D3 125,246,650 1.0132 123,614,933 15 2,386 .031186096
F1 15,248,450 0.9857 15,469,666 7 34 .003124330
F1 14,837,270 0.9976 14,872,965 6 10 .003670870
Random Totals: 333,901,260   333,432,415 74 3,238  
Catg J Exception Values: 1,235,459   1,111,484      
Catg D1 Exception Values: 4,415,600   3,101,804      
Total Test Values (4): 339,552,319   337,645,703      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 16,882,285

Confidence Interval Values (5)

State Lower Limit: 320,763,418 (State Test Value minus Margin of Error Percent)
Local Test Value: 339,552,319 (Within Confidence Interval)
State Upper Limit: 354,527,988 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 435,268,988 (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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