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2008 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 75,005,933 1.0053 74,610,497 26 717 .001870795
A 94,506,052 0.9996 94,543,870 24 659 .003050868
A 75,512,674 0.9974 75,709,519 11 437 .001249506
A 87,699,607 1.0191 86,055,939 10 313 .009043056
D3 135,331,196 0.8769 154,329,109 10 1,826 .032311605
F1 5,977,724 0.9840 6,074,923 7 38 .003911922
F1 8,424,402 1.0541 7,992,033 7 27 .010798617
F1 7,236,184 0.9287 7,791,735 5 15 .013759963
F1 11,375,251 1.0767 10,564,922 4 15 .047158959
Random Totals: 501,069,023   517,672,547 104 4,047  
Catg J Exception Values: 15,711,117   15,991,070      
Catg D1 Exception Values: 2,217,531   1,839,762      
Total Test Values (4): 518,997,671   535,503,379      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 26,775,169

Confidence Interval Values (5)

State Lower Limit: 508,728,210 (State Test Value minus Margin of Error Percent)
Local Test Value: 518,997,671 (Within Confidence Interval)
State Upper Limit: 562,278,548 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 544,861,425 (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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