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2007 Confidence Interval Detail
071/El Paso
071-909/Socorro ISD

Category Summary

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

Stratum
Variance
A 1,181,780,868 1.0084 1,171,936,601 21 11,935 .014883513
A 1,181,601,647 1.0328 1,144,075,956 91 9,614 .007332109
A 1,181,475,258 1.0412 1,134,724,604 139 7,448 .006993384
A 1,181,486,081 1.0310 1,145,961,281 149 4,463 .014593330
F1 178,652,573 0.8464 211,073,456 9 359 .088291377
F1 179,159,641 0.9614 186,352,861 7 101 .009996494
F1 179,472,768 0.8997 199,480,680 11 47 .018517545
F1 176,146,686 0.9502 185,378,537 5 23 .002975179
L1 141,596,442 1.0080 140,472,661 7 442 .006721016
L1 148,361,615 1.0342 143,455,439 7 42 .008089754
L1 160,601,516 0.9897 162,272,927 5 11 .001723570
Random Totals: 5,890,335,095   5,825,185,003 451 34,485  
Catg D1 Exception Values: 2,966,618   2,880,522      
Catg L1 Exception Values: 133,549,085   133,711,279      
Total Test Values (4): 6,026,850,798   5,961,776,804      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 298,088,840

Confidence Interval Values (5)

State Lower Limit: 5,663,687,964 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,026,850,798 (Within Confidence Interval)
State Upper Limit: 6,259,865,644 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,876,352,551 (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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