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2006 Confidence Interval Detail
165/Midland
165-901/Midland ISD

Category Summary

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

Stratum
Variance
A 750,344,679 0.9240 812,061,341 49 12,048 .022505227
A 750,140,365 0.9512 788,625,279 54 6,806 .014285649
A 750,348,779 0.9851 761,698,080 54 4,578 .013671071
A 749,805,839 0.9956 753,119,565 52 2,375 .014025701
F1 207,878,196 0.9473 219,442,833 52 1,565 .066052448
F1 208,705,536 1.0256 203,496,037 12 358 .027222759
F1 212,723,133 0.9694 219,437,934 7 108 .020550867
F1 200,458,611 0.9608 208,637,189 8 29 .009875686
G1 417,732,097 1.0446 399,896,704 9 514 .018330888
G1 416,001,466 1.0288 404,356,013 8 119 .007784072
G1 431,131,631 1.0292 418,899,758 6 23 .011714820
G1 398,368,014 1.0888 365,878,044 2 3 .003313835
L1 155,550,681 1.0775 144,362,581 9 1,988 .006236763
L1 155,895,480 1.0900 143,023,376 10 338 .009296743
L1 160,521,486 1.1397 140,845,386 9 96 .069721853
L1 148,544,688 0.9970 148,991,663 7 20 .007287457
Random Totals: 6,114,150,681   6,132,771,783 348 30,968  
Catg D1 Exception Values: 8,154,700   11,969,062      
Total Test Values (4): 6,122,305,381   6,144,740,845      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 307,237,042

Confidence Interval Values (5)

State Lower Limit: 5,837,503,803 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,122,305,381 (Within Confidence Interval)
State Upper Limit: 6,451,977,887 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,872,131,097 (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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