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2006 Confidence Interval Detail
252/Young
252-901/Graham ISD

Category Summary

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

Stratum
Variance
A 57,257,646 1.0274 55,730,627 66 1,728 .058597063
A 57,167,506 0.9983 57,264,856 91 919 .008264423
A 57,203,752 0.9463 60,449,912 35 558 .020029561
A 57,184,216 0.9919 57,651,191 31 304 .004115514
D3 52,533,880 1.0070 52,168,699 68 5,160 .158419963
F1 14,257,922 0.6531 21,831,147 6 238 .456283710
F1 14,330,353 0.8362 17,137,471 7 92 .097652539
F1 14,923,998 0.8220 18,155,715 6 26 .072792496
F1 13,457,112 0.8239 16,333,429 3 6 .039731362
G1 27,615,880 0.9211 29,981,414 8 310 .018863736
G1 27,724,850 0.9627 28,799,055 6 87 .016982414
G1 55,097,980 1.0140 54,337,258 6 24 .002734133
L1 7,814,178 0.9781 7,989,140 7 199 .053576277
L1 7,818,068 1.0379 7,532,583 6 50 .036854303
L1 7,814,812 1.0629 7,352,349 5 19 .024470317
Random Totals: 472,202,153   492,714,846 351 9,720  
Catg J Exception Values: 27,145,590   27,862,972      
Catg D1 Exception Values: 23,115,380   18,267,021      
Catg L1 Exception Values: 7,285,840   9,340,651      
Total Test Values (4): 529,748,963   548,185,490      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 27,409,275

Confidence Interval Values (5)

State Lower Limit: 520,776,215 (State Test Value minus Margin of Error Percent)
Local Test Value: 529,748,963 (Within Confidence Interval)
State Upper Limit: 575,594,765 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 568,513,450 (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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