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2006 Confidence Interval Detail
218/Sutton
218-901/Sonora ISD

Category Summary

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

Stratum
Variance
A 17,869,983 0.9522 18,767,048 11 481 .004553794
A 17,923,865 0.9949 18,015,745 12 254 .061933419
A 17,844,661 0.9426 18,931,319 22 170 .008802438
A 17,815,229 0.9123 19,527,819 13 101 .007802772
D3 24,495,137 0.9231 26,535,735 15 3,936 .038521666
G1 273,026,346 1.0378 263,081,852 7 1,823 .002547538
G1 273,030,260 1.1247 242,758,300 7 844 .010204177
G1 273,629,680 0.9754 280,530,736 7 491 .004457093
G1 272,294,150 1.0274 265,032,266 7 244 .001373325
Random Totals: 1,187,929,311   1,153,180,820 101 8,344  
Catg D1 Exception Values: 35,293,771   39,329,806      
Total Test Values (4): 1,223,223,082   1,192,510,626      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 59,625,531

Confidence Interval Values (5)

State Lower Limit: 1,132,885,095 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,223,223,082 (Within Confidence Interval)
State Upper Limit: 1,252,136,157 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,439,772,043 (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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