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2009 Confidence Interval Detail
227/Travis
027-904/Marble Falls ISD

Category Summary

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

Stratum
Variance
A 90,109,224 0.9906 90,964,288 15 341 .012311322
A 105,957,190 1.0490 101,007,807 15 206 .018298779
A 95,509,469 1.0045 95,081,602 17 114 .003469157
A 85,700,742 1.0656 80,424,870 16 46 .013002892
C 17,171,002 0.9544 17,991,410 12 212 .017102274
C 16,571,583 0.9923 16,700,174 12 82 .005260246
C 12,095,946 0.9793 12,351,625 10 36 .001985114
C 9,458,290 0.9855 9,597,453 9 16 .001047826
D3 61,350,284 1.0097 60,760,903 22 635 .006388001
Random Totals: 493,923,730   484,880,132 128 1,688  
Catg D1 Exception Values: 1,389,605   873,551      
Total Test Values (4): 495,313,335   485,753,683      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 24,287,684

Confidence Interval Values (5)

State Lower Limit: 461,465,999 (State Test Value minus Margin of Error Percent)
Local Test Value: 495,313,335 (Within Confidence Interval)
State Upper Limit: 510,041,367 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 518,927,989 (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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