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2007 Confidence Interval Detail
071/El Paso
071-905/Ysleta ISD

Category Summary

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

Stratum
Variance
A 1,110,429,618 0.9892 1,122,553,192 33 13,671 .016421741
A 1,110,407,732 0.9973 1,113,413,950 84 10,950 .011496737
A 1,110,390,797 1.0145 1,094,520,253 114 8,823 .015200212
A 1,110,357,502 1.0262 1,082,008,870 167 5,996 .012731429
B 104,077,381 0.9576 108,685,653 31 1,430 .075915261
B 104,706,143 0.9311 112,454,240 30 588 .104473259
B 104,697,493 0.8187 127,882,610 6 63 .003990717
B 102,235,681 0.9812 104,194,538 8 19 .008928466
F1 331,306,693 0.9930 333,642,188 11 921 .010568126
F1 330,555,584 0.9372 352,705,489 8 307 .043109654
F1 333,081,204 0.8310 400,819,740 10 138 .211403493
F1 328,366,877 0.9290 353,462,731 7 51 .029277361
L1 160,726,960 1.0274 156,440,491 8 1,274 .049569625
L1 161,395,780 0.9894 163,124,904 7 251 .005656188
L1 160,698,373 0.9436 170,303,490 7 82 .007349172
L1 159,270,232 1.0764 147,965,656 5 24 .026604122
Random Totals: 6,822,704,050   6,944,177,995 536 44,588  
Catg D1 Exception Values: 754,045   731,413      
Total Test Values (4): 6,823,458,095   6,944,909,408      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 347,245,470

Confidence Interval Values (5)

State Lower Limit: 6,597,663,938 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,823,458,095 (Within Confidence Interval)
State Upper Limit: 7,292,154,878 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,825,488,264 (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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