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2007 Confidence Interval Detail
021/Brazos
021-901/College Station ISD

Category Summary

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

Stratum
Variance
A 642,245,857 0.9340 687,629,397 56 5,401 .006897007
A 642,305,941 0.9768 657,561,365 56 3,981 .006130905
A 641,993,895 0.9557 671,752,532 57 2,794 .011133368
A 641,879,028 0.9548 672,265,425 54 1,619 .006013351
B 191,229,637 0.9267 206,355,495 55 1,152 .006727193
B 194,044,740 0.9636 201,374,782 42 262 .003062891
B 194,216,555 0.9749 199,216,899 7 28 .002518729
B 183,194,333 1.0092 181,524,309 5 9 .000480732
F1 230,989,469 1.0910 211,722,703 6 302 .005833662
F1 233,688,661 0.9296 251,386,253 7 96 .073598317
F1 231,393,906 0.9326 248,116,991 6 41 .011763853
F1 223,839,591 1.0456 214,077,650 4 12 .004303982
L1 67,921,670 1.0655 63,746,288 7 857 .028301089
L1 68,276,066 1.0206 66,897,968 7 178 .007573879
L1 68,846,044 0.9796 70,279,751 7 56 .003058671
L1 66,279,562 1.0074 65,792,696 5 14 .011303372
Random Totals: 4,522,344,955   4,669,700,504 381 16,802  
Catg D1 Exception Values: 2,130,396   1,541,194      
Total Test Values (4): 4,524,475,351   4,671,241,698      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 233,562,085

Confidence Interval Values (5)

State Lower Limit: 4,437,679,613 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,524,475,351 (Within Confidence Interval)
State Upper Limit: 4,904,803,783 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,898,584,003 (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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