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2007 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 13,749,565 1.1077 12,412,716 8 201 .014425890
A 13,707,135 1.1310 12,119,483 13 129 .048064518
A 13,877,997 1.0370 13,382,832 17 93 .019077951
A 13,574,414 0.9863 13,762,967 8 55 .003802424
D3 86,467,060 1.0023 86,268,642 26 2,271 .051822040
G1 10,638,640 1.0070 10,564,687 6 81 .037287307
G1 10,987,400 1.1028 9,963,185 6 27 .033863065
G1 12,305,090 1.0100 12,183,257 3 6 .002952716
Random Totals: 175,307,301   170,657,769 87 2,863  
Catg J Exception Values: 12,581,682   13,022,080      
Catg D1 Exception Values: 3,169,480   2,865,353      
Catg G1 Exception Values: 7,893,730   7,615,112      
Total Test Values (4): 198,952,193   194,160,314      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 9,708,016

Confidence Interval Values (5)

State Lower Limit: 184,452,298 (State Test Value minus Margin of Error Percent)
Local Test Value: 198,952,193 (Within Confidence Interval)
State Upper Limit: 203,868,330 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 212,630,923 (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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