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2007 Confidence Interval Detail
061/Denton
061-907/Aubrey ISD

Category Summary

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

Stratum
Variance
A 75,881,070 0.9913 76,547,029 30 642 .000719110
A 75,889,003 0.9982 76,025,850 48 457 .000472865
A 75,841,736 1.0026 75,645,059 43 370 .001210173
A 75,606,664 1.0018 75,470,817 30 229 .000607280
C 3,892,252 0.9396 4,142,456 7 249 .106198561
C 3,888,879 1.0742 3,620,256 7 200 .041618333
C 3,980,341 0.9405 4,232,154 7 166 .006012964
C 3,756,037 1.0314 3,641,688 14 70 .003988284
D3 128,293,043 1.0185 125,962,732 22 1,802 .000737272
F1 7,112,586 0.9729 7,310,706 8 40 .016678671
F1 7,164,730 0.7738 9,259,150 5 21 .066557510
F1 6,775,802 0.8390 8,076,045 4 12 .028063687
F1 6,710,386 0.7414 9,050,966 4 8 .077792063
Random Totals: 474,792,529   478,984,908 229 4,266  
Catg D1 Exception Values: 2,280,587   1,857,150      
Total Test Values (4): 477,073,116   480,842,058      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 24,042,103

Confidence Interval Values (5)

State Lower Limit: 456,799,955 (State Test Value minus Margin of Error Percent)
Local Test Value: 477,073,116 (Within Confidence Interval)
State Upper Limit: 504,884,161 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 498,515,820 (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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