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2009 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 1,149,657,939 1.0053 1,143,596,876 99 14,348 .033715790
A 1,230,568,263 1.0469 1,175,440,121 126 11,915 .026287681
A 1,137,425,850 1.0083 1,128,062,928 101 8,754 .021997567
A 1,076,945,586 1.0258 1,049,859,218 57 5,694 .028225066
B 93,964,098 0.9762 96,254,966 9 1,230 .004604336
B 108,087,763 0.9989 108,206,790 12 571 .030084245
B 114,098,000 0.9423 121,084,580 11 70 .038661332
B 129,397,984 1.0803 119,779,676 11 22 .010699570
F1 363,445,247 0.9277 391,770,235 9 960 .027232916
F1 363,310,496 0.9455 384,252,243 10 337 .016621272
F1 407,041,438 0.9671 420,888,675 13 156 .018693264
F1 292,842,424 1.0301 284,285,432 10 39 .003755919
L1 203,056,223 1.0030 202,448,876 8 1,272 .000891130
L1 204,312,552 0.9906 206,251,314 8 201 .001101451
L1 168,461,055 0.9922 169,785,381 6 53 .001077112
L1 427,962,603 0.9821 435,762,756 5 20 .003509155
Random Totals: 7,470,577,521   7,437,730,067 495 45,642  
Catg D1 Exception Values: 693,238   657,629      
Total Test Values (4): 7,471,270,759   7,438,387,696      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 371,919,385

Confidence Interval Values (5)

State Lower Limit: 7,066,468,311 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,471,270,759 (Within Confidence Interval)
State Upper Limit: 7,810,307,081 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,470,522,841 (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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