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2006 Confidence Interval Detail
226/Tom Green
226-903/San Angelo ISD

Category Summary

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

Stratum
Variance
A 487,043,976 0.9690 502,625,362 7 10,777 .001209707
A 487,208,025 0.9692 502,690,905 8 5,819 .001482088
A 486,511,797 0.9620 505,729,519 9 3,965 .002896563
A 486,839,593 0.9825 495,511,036 8 2,055 .001394037
F1 132,952,955 0.6803 195,432,831 10 1,058 .771624437
F1 132,738,420 0.9346 142,026,985 8 291 .008323909
F1 134,593,962 1.0126 132,919,180 5 78 .021244929
F1 130,917,953 1.0075 129,943,378 6 20 .013754330
L1 73,472,326 1.0112 72,658,550 8 202 .002421987
L1 74,622,157 1.0278 72,603,772 7 62 .002364124
L1 70,423,196 1.0384 67,818,948 6 15 .000787484
Random Totals: 2,697,324,360   2,819,960,466 82 24,342  
Catg D1 Exception Values: 6,375,790   6,288,746      
Total Test Values (4): 2,703,700,150   2,826,249,212      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 141,312,461

Confidence Interval Values (5)

State Lower Limit: 2,684,936,751 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,703,700,150 (Within Confidence Interval)
State Upper Limit: 2,967,561,673 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,793,904,510 (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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