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2009 Confidence Interval Detail
016/Blanco
016-902/Blanco ISD

Category Summary

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

Stratum
Variance
A 19,206,350 0.9651 19,900,891 7 238 .009443772
A 18,819,860 1.0067 18,694,606 7 149 .014591720
A 19,395,050 1.0119 19,166,963 7 100 .008952731
A 21,467,060 1.0415 20,611,675 6 54 .007048823
C 20,581,460 0.9572 21,501,734 14 699 .047903544
C 21,836,370 0.9599 22,748,588 12 511 .020216045
C 11,462,270 0.9707 11,808,252 11 200 .004896660
C 16,844,940 1.0513 16,022,962 10 178 .025755602
D3 309,696,680 0.9841 314,700,417 33 4,392 .006957069
F1 9,795,090 0.9676 10,123,078 6 71 .073992349
F1 10,118,590 0.9162 11,044,084 6 37 .022849368
F1 10,862,080 1.0815 10,043,532 5 24 .017432819
F1 12,288,200 0.9547 12,871,268 4 9 .009964604
Random Totals: 502,374,000   509,238,050 128 6,662  
Catg D1 Exception Values: 8,802,062   8,534,654      
Total Test Values (4): 511,176,062   517,772,704      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 25,888,635

Confidence Interval Values (5)

State Lower Limit: 491,884,069 (State Test Value minus Margin of Error Percent)
Local Test Value: 511,176,062 (Within Confidence Interval)
State Upper Limit: 543,661,339 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 511,379,269 (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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