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2008 Confidence Interval Detail
091/Grayson
091-903/Denison ISD

Category Summary

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

Stratum
Variance
A 159,407,866 0.9727 163,881,840 8 3,768 .063192855
A 170,595,324 1.0203 167,201,141 12 2,235 .033689321
A 187,013,883 0.8235 227,096,397 11 1,583 .216146023
A 205,481,393 0.9321 220,449,944 9 885 .009732646
D3 74,325,622 0.9624 77,229,449 11 2,213 .014704241
F1 47,559,083 1.0017 47,478,370 12 452 .084806061
F1 46,321,331 0.8340 55,541,164 7 115 .022321622
F1 46,883,046 0.9456 49,580,209 6 34 .022946592
F1 66,370,292 0.7980 83,170,792 4 10 .308256822
L1 36,541,532 1.0879 33,589,054 6 344 .033883626
L1 42,876,809 1.0456 41,006,895 8 42 .007091264
L1 56,707,887 1.0205 55,568,728 2 5 .000040482
Random Totals: 1,140,084,068   1,221,793,983 96 11,686  
Catg D1 Exception Values: 4,008,383   2,545,215      
Total Test Values (4): 1,144,092,451   1,224,339,198      

Margin of Error

Margin of Error Percent: 6.7156097
Margin of Error Value: 82,221,842

Confidence Interval Values (5)

State Lower Limit: 1,142,117,356 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,144,092,451 (Within Confidence Interval)
State Upper Limit: 1,306,561,040 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,166,937,027 (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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