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2008 Confidence Interval Detail
233/Val Verde
233-901/San Felipe-Del Rio CISD

Category Summary

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

Stratum
Variance
A 210,241,430 1.0400 202,155,221 12 5,057 .100652364
A 182,725,590 0.9564 191,055,615 16 2,203 .020468158
A 247,703,170 0.9050 273,705,160 15 2,093 .053285108
A 269,888,020 0.8735 308,973,120 15 1,326 .010159834
F1 54,966,885 0.9564 57,472,694 7 468 .001484445
F1 59,486,360 0.9184 64,771,733 7 154 .025936992
F1 50,543,940 0.9598 52,660,909 3 12 .000395695
F1 62,263,950 0.9434 65,999,523 6 8 .000563981
F1 14,711,990 0.4082 36,041,132 3 9 .009997889
L1 29,269,430 1.0389 28,173,482 7 434 .004191460
L1 30,942,840 1.0543 29,349,180 7 77 .000879001
L1 31,569,140 1.0334 30,548,810 5 16 .001031065
Random Totals: 1,244,312,745   1,340,906,579 103 11,857  
Catg D1 Exception Values: 8,401,293   8,843,461      
Catg L1 Exception Values: 21,734,190   21,304,975      
Total Test Values (4): 1,274,448,228   1,371,055,015      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 68,552,751

Confidence Interval Values (5)

Local Test Value: 1,274,448,228 (Outside Confidence Interval)
State Lower Limit: 1,302,502,264 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,439,607,766 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,371,772,353 (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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