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2007 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 18,159,653 0.9797 18,535,932 7 499 .009979313
A 18,214,215 1.0125 17,989,348 8 243 .017383170
A 18,197,647 0.9503 19,149,371 8 161 .000724434
A 18,059,474 0.9643 18,728,066 8 93 .003886840
G1 256,139,443 0.9428 271,679,511 7 1,940 .014102505
G1 256,394,840 0.9833 260,749,354 7 895 .001387868
G1 256,238,280 1.0107 253,525,557 7 524 .001968501
G1 255,562,120 1.0422 245,214,086 7 262 .001724766
Random Totals: 1,096,965,672   1,105,571,225 59 4,617  
Catg D1 Exception Values: 39,085,901   38,626,568      
Total Test Values (4): 1,136,051,573   1,144,197,793      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 57,209,890

Confidence Interval Values (5)

State Lower Limit: 1,086,987,903 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,136,051,573 (Within Confidence Interval)
State Upper Limit: 1,201,407,683 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,410,650,299 (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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