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2010 Confidence Interval Detail
227/Travis
227-904/Pflugerville ISD

Category Summary

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

Stratum
Variance
A 1,234,196,340 0.9542 1,293,435,695 97 9,522 .004237754
A 1,271,616,259 0.9750 1,304,221,804 96 8,046 .003893344
A 1,127,494,069 0.9670 1,165,971,116 95 5,955 .004577016
A 892,943,192 0.9824 908,940,546 95 3,649 .007495868
B 160,073,937 1.0368 154,392,300 11 261 .018464626
B 128,915,581 0.9919 129,968,324 5 8 .000420896
B 126,642,214 0.9440 134,154,888 4 6 .000678028
B 81,902,015 0.9958 82,247,454 3 3 .001089552
F1 360,067,409 1.0238 351,697,020 9 448 .006595754
F1 293,986,566 0.9687 303,485,667 9 100 .002261963
F1 359,636,133 0.9693 371,026,651 8 41 .001323937
F1 246,414,815 0.9842 250,370,672 6 11 .000033151
L1 150,999,339 1.0368 145,639,795 10 564 .121886069
L1 159,929,853 1.0009 159,786,046 9 93 .002309978
L1 109,334,326 1.0123 108,005,854 7 19 .004690686
L1 134,296,663 0.9387 143,066,649 4 5 .010900521
Random Totals: 6,838,448,711   7,006,410,481 468 28,731  
Catg J Exception Values: 67,611,842   73,118,267      
Catg D1 Exception Values: 4,348,415   5,854,810      
Total Test Values (4): 6,910,408,968   7,085,383,558      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 354,269,178

Confidence Interval Values (5)

State Lower Limit: 6,731,114,380 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,910,408,968 (Within Confidence Interval)
State Upper Limit: 7,439,652,736 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,203,781,108 (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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