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2009 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 180,428,105 0.9837 183,417,815 35 3,940 .009572790
A 184,552,796 1.0185 181,200,585 45 2,227 .009146302
A 195,665,056 1.0016 195,352,492 37 1,528 .002398882
A 196,217,121 0.9746 201,330,927 21 776 .005727582
D3 92,414,290 0.8735 105,797,699 17 2,175 .050386192
F1 51,823,845 0.9429 54,962,186 17 467 .015595185
F1 52,841,329 0.8678 60,891,137 15 111 .027645163
F1 58,744,843 0.8953 65,614,702 15 29 .018798993
F1 95,603,595 0.9092 105,151,336 4 8 .003061156
L1 27,042,793 1.0548 25,637,839 15 345 .014958198
L1 25,883,721 1.0267 25,210,598 16 64 .034889455
L1 16,959,341 1.0848 15,633,611 7 9 .010329994
Random Totals: 1,178,176,835   1,220,200,927 244 11,679  
Catg D1 Exception Values: 3,592,115   2,459,288      
Catg L1 Exception Values: 22,218,622   21,760,344      
Total Test Values (4): 1,203,987,572   1,244,420,559      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 62,221,028

Confidence Interval Values (5)

State Lower Limit: 1,182,199,531 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,203,987,572 (Within Confidence Interval)
State Upper Limit: 1,306,641,587 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,275,076,382 (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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