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2009 Confidence Interval Detail
125/Jim Wells
125-901/Alice ISD

Category Summary

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

Stratum
Variance
A 86,301,734 0.9784 88,207,005 21 2,364 .183070031
A 87,125,604 0.9312 93,562,719 11 1,292 .011458292
A 88,260,436 0.9639 91,565,967 13 770 .011202700
A 87,554,659 0.9734 89,947,256 19 479 .003767779
D3 98,023,367 0.8996 108,963,280 21 5,104 .157917111
F1 25,871,233 0.9452 27,371,173 7 330 .002720621
F1 26,933,600 0.9275 29,038,922 7 99 .014672503
F1 28,165,093 0.8713 32,325,368 6 40 .044674727
F1 32,534,279 0.9243 35,198,830 4 9 .001871780
L1 21,316,823 1.0446 20,406,685 7 369 .001965894
L1 19,520,088 1.0785 18,099,293 6 84 .003635316
L1 21,698,961 1.0100 21,484,120 6 31 .001563499
L1 24,190,458 0.9973 24,255,949 3 6 .001673434
Random Totals: 647,496,335   680,426,567 131 10,977  
Catg D1 Exception Values: 22,086,102   21,082,133      
Total Test Values (4): 669,582,437   701,508,700      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 35,075,435

Confidence Interval Values (5)

State Lower Limit: 666,433,265 (State Test Value minus Margin of Error Percent)
Local Test Value: 669,582,437 (Within Confidence Interval)
State Upper Limit: 736,584,135 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,059,477,560 (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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