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2011 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 14,368,620 1.0068 14,271,573 10 214 .019079687
A 13,308,380 0.9759 13,637,032 10 130 .007664553
A 14,608,530 1.0532 13,870,613 10 106 .017200587
A 13,805,000 1.0545 13,091,513 10 68 .004484365
D3 93,602,400 0.9669 96,806,702 17 2,238 .018359454
G1 20,466,220 0.9870 20,735,785 12 70 .005198046
G1 20,437,259 1.0075 20,285,121 7 21 .002209539
G1 20,608,437 1.0096 20,412,477 6 10 .003749137
G1 19,692,930 0.9967 19,758,132 4 6 .005909055
Random Totals: 230,897,776   232,868,948 86 2,863  
Catg J Exception Values: 3,021,369   3,250,943      
Catg D1 Exception Values: 2,938,550   2,742,615      
Total Test Values (4): 236,857,695   238,862,506      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,943,125

Confidence Interval Values (5)

State Lower Limit: 226,919,381 (State Test Value minus Margin of Error Percent)
Local Test Value: 236,857,695 (Within Confidence Interval)
State Upper Limit: 250,805,631 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 286,948,350 (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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