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2008 Confidence Interval Detail
227/Travis
227-907/Manor ISD

Category Summary

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

Stratum
Variance
A 234,935,241 0.9482 247,769,712 57 2,415 .009152475
A 220,438,480 0.9634 228,813,037 57 1,656 .005763987
A 262,316,409 0.9857 266,121,953 57 1,603 .004093158
A 341,061,620 0.9886 344,994,558 56 1,554 .022172942
B 18,919,133 1.0127 18,681,873 5 18 .000625005
D3 118,927,435 0.8909 133,491,340 12 1,741 .008755405
F1 139,342,225 0.8713 159,924,509 7 164 .038662729
F1 115,898,794 0.9734 119,065,948 6 38 .007470394
F1 143,232,487 0.9550 149,981,662 5 23 .010635717
F1 108,720,094 0.9967 109,080,058 4 8 .005912223
L1 72,342,909 0.9085 79,628,959 8 207 .010158000
L1 60,916,292 0.9737 62,561,664 7 48 .005353753
L1 63,153,933 1.0044 62,877,273 5 15 .000239467
L1 104,315,071 0.9985 104,471,779 3 6 .000044936
Random Totals: 2,004,520,123   2,087,464,325 289 9,496  
Catg D1 Exception Values: 4,335,658   3,292,020      
Catg B Exception Values: 110,816,320   115,350,000      
Catg L1 Exception Values: 145,406,949   141,889,324      
Total Test Values (4): 2,265,079,050   2,347,995,669      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 117,399,783

Confidence Interval Values (5)

State Lower Limit: 2,230,595,886 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,265,079,050 (Within Confidence Interval)
State Upper Limit: 2,465,395,452 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,724,280,007 (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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