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2009 Confidence Interval Detail
249/Wise
249-901/Alvord ISD

Category Summary

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

Stratum
Variance
A 13,501,060 0.9663 13,971,913 7 202 .026770246
A 12,385,230 0.9669 12,809,215 7 125 .010256823
A 14,803,290 0.9600 15,420,094 10 111 .003710089
A 15,211,850 1.0165 14,964,929 6 76 .003053146
D3 93,125,560 0.9422 98,838,421 21 2,253 .062945649
G1 13,292,960 1.1094 11,982,116 6 76 .044723653
G1 13,691,460 0.9994 13,699,680 7 20 .003124413
G1 14,496,532 0.9980 14,525,583 4 9 .001414673
G1 10,997,220 1.0991 10,005,659 2 3 .037882559
Random Totals: 201,505,162   206,217,610 70 2,875  
Catg J Exception Values: 13,323,030   13,522,919      
Catg D1 Exception Values: 3,052,090   2,991,771      
Total Test Values (4): 217,880,282   222,732,300      

Margin of Error

Margin of Error Percent: 5.0677576
Margin of Error Value: 11,287,533

Confidence Interval Values (5)

State Lower Limit: 211,444,767 (State Test Value minus Margin of Error Percent)
Local Test Value: 217,880,282 (Within Confidence Interval)
State Upper Limit: 234,019,833 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 243,752,302 (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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