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2010 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 21,130,910 0.9763 21,643,870 15 501 .024973351
A 20,911,260 0.9950 21,016,342 14 266 .008849392
A 21,972,160 0.9663 22,738,446 11 181 .023265917
A 22,952,350 0.9784 23,459,066 12 107 .004491375
G1 165,728,342 1.0141 163,424,063 12 2,039 .065483013
G1 165,700,704 1.0672 155,266,777 12 755 .043215373
G1 165,745,333 1.0964 151,172,321 12 405 .023668032
G1 165,552,550 1.0462 158,241,780 11 176 .022000961
Random Totals: 749,693,609   716,962,665 99 4,430  
Catg J Exception Values: 16,792,690   18,003,361      
Catg D1 Exception Values: 45,438,740   42,881,943      
Total Test Values (4): 811,925,039   777,847,969      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 38,892,398

Confidence Interval Values (5)

State Lower Limit: 738,955,571 (State Test Value minus Margin of Error Percent)
Local Test Value: 811,925,039 (Within Confidence Interval)
State Upper Limit: 816,740,367 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,068,236,482 (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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