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2012 Confidence Interval Detail
019/Bowie
019-905/New Boston ISD

Category Summary

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

Stratum
Variance
A 39,355,578 1.0200 38,583,900 10 851 .019008701
A 39,644,035 1.0139 39,100,538 12 506 .006596762
A 39,223,613 0.9510 41,244,598 12 351 .007522004
A 40,025,329 0.9602 41,684,367 10 220 .004645512
D3 56,381,556 0.9677 58,263,466 15 1,898 .021166619
F1 15,619,503 0.9096 17,171,837 11 99 .017224204
F1 16,586,598 0.9333 17,771,990 7 29 .012032067
F1 14,825,182 0.7903 18,758,930 5 11 .044174458
F1 15,253,681 0.9349 16,315,842 2 3 .002214116
L1 5,213,811 1.0853 4,804,027 9 100 .060561951
L1 4,757,314 1.0873 4,375,346 7 19 .012759975
L1 7,233,812 1.2639 5,723,405 3 8 .081426260
Random Totals: 294,120,012   303,798,246 103 4,095  
Catg D1 Exception Values: 5,880,502   5,130,202      
Catg L1 Exception Values: 23,641,129   23,476,263      
Total Test Values (4): 323,641,643   332,404,711      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 16,620,236

Confidence Interval Values (5)

State Lower Limit: 315,784,475 (State Test Value minus Margin of Error Percent)
Local Test Value: 323,641,643 (Within Confidence Interval)
State Upper Limit: 349,024,947 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 359,044,795 (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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