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2010 Confidence Interval Detail
227/Travis
227-912/Lago Vista ISD

Category Summary

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

Stratum
Variance
A 298,727,340 0.9832 303,831,713 38 1,907 .006495943
A 261,505,873 0.9474 276,024,776 33 1,058 .004426085
A 254,535,149 0.9873 257,809,327 17 608 .002048811
A 286,825,588 0.9786 293,097,883 15 279 .002191118
C 56,604,863 0.8875 63,780,127 11 3,869 .026208478
C 54,111,195 0.9177 58,963,926 13 1,233 .013668159
C 55,090,475 0.9514 57,904,641 10 340 .009075808
C 46,887,714 0.9939 47,175,484 9 101 .000184793
Random Totals: 1,314,288,197   1,358,587,877 146 9,395  
Catg J Exception Values: 6,193,234   6,784,875      
Catg D1 Exception Values: 233,779   136,397      
Total Test Values (4): 1,320,715,210   1,365,509,149      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 68,275,457

Confidence Interval Values (5)

State Lower Limit: 1,297,233,692 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,320,715,210 (Within Confidence Interval)
State Upper Limit: 1,433,784,606 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,411,602,331 (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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