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2009 Confidence Interval Detail
220/Tarrant
220-915/Azle ISD

Category Summary

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

Stratum
Variance
A 249,319,718 0.9784 254,823,915 18 2,696 .002527246
A 268,145,573 0.9980 268,682,939 33 1,731 .004517190
A 236,664,094 0.9947 237,925,097 22 990 .001005514
A 255,412,354 1.0183 250,822,306 13 617 .004457663
F1 28,387,755 0.9572 29,657,078 7 166 .013545878
F1 27,828,811 0.9232 30,143,859 6 70 .037022615
F1 30,807,462 0.8387 36,732,398 6 38 .006232972
F1 32,136,149 0.9082 35,384,441 4 12 .010201010
Random Totals: 1,128,701,916   1,144,172,033 109 6,320  
Catg D1 Exception Values: 429,285   321,291      
Total Test Values (4): 1,129,131,201   1,144,493,324      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 57,224,666

Confidence Interval Values (5)

State Lower Limit: 1,087,268,658 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,129,131,201 (Within Confidence Interval)
State Upper Limit: 1,201,717,990 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,440,194,234 (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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