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2006 Confidence Interval Detail
114/Howard
114-901/Big Spring ISD

Category Summary

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

Stratum
Variance
A 68,975,464 1.0493 65,734,741 19 3,096 .058838164
A 69,012,135 0.9030 76,425,399 25 1,547 .062378438
A 68,924,349 0.9063 76,050,258 27 902 .017693554
A 68,967,015 0.9712 71,012,165 22 481 .013006784
F1 24,662,802 0.9440 26,125,850 8 381 .004739024
F1 24,693,699 0.8717 28,328,208 16 96 .044365481
F1 26,088,489 0.9550 27,317,790 11 22 .044370889
G1 17,051,239 0.9524 17,903,443 6 26 .004179194
G1 17,363,662 0.9766 17,779,707 4 8 .003849122
G1 17,450,836 0.9793 17,819,704 2 3 .000048641
L1 14,524,287 0.9857 14,734,997 7 333 .004762348
L1 14,645,810 0.9216 15,891,721 9 70 .036189815
L1 15,076,934 0.9795 15,392,480 9 23 .000705916
L1 13,416,221 1.0000 13,416,221 2 3
Random Totals: 460,852,942   483,932,684 167 6,991  
Catg J Exception Values: 27,486,004   27,575,086      
Catg D1 Exception Values: 7,195,190   10,340,877      
Catg F1 Exception Values: 25,003,568   23,029,362      
Catg G1 Exception Values: 41,364,392   41,987,024      
Total Test Values (4): 561,902,096   586,865,033      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 29,343,252

Confidence Interval Values (5)

State Lower Limit: 557,521,781 (State Test Value minus Margin of Error Percent)
Local Test Value: 561,902,096 (Within Confidence Interval)
State Upper Limit: 616,208,285 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 811,794,266 (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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