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2009 Confidence Interval Detail
220/Tarrant
220-912/Crowley ISD

Category Summary

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

Stratum
Variance
A 767,758,938 1.0150 756,412,747 26 7,522 .007522469
A 738,863,569 1.0204 724,092,090 27 5,405 .008763942
A 725,721,554 1.0177 713,099,689 22 3,980 .007539252
A 776,956,698 1.0059 772,399,541 25 2,186 .010159756
B 100,325,320 0.9990 100,425,746 7 226 .000063475
B 85,460,232 0.9718 87,940,144 4 10 .002024144
B 90,375,243 0.9448 95,655,422 4 7 .010298288
B 104,290,195 0.9711 107,393,878 3 5 .003174330
F1 213,741,919 0.9311 229,558,500 8 192 .005009128
F1 218,261,942 0.9493 229,918,827 6 60 .003303259
F1 216,432,498 0.8528 253,790,453 6 25 .022532566
F1 163,198,939 0.8900 183,369,594 4 7 .019714007
L1 61,214,092 1.2153 50,369,532 7 448 .078661381
L1 61,337,164 1.1073 55,393,447 7 105 .008439428
L1 61,989,609 1.1369 54,525,120 6 28 .014168596
L1 55,514,207 1.0339 53,693,981 4 8 .000563569
Random Totals: 4,441,442,119   4,468,038,711 166 20,214  
Catg D1 Exception Values: 958,956   960,808      
Total Test Values (4): 4,442,401,075   4,468,999,519      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 223,449,976

Confidence Interval Values (5)

State Lower Limit: 4,245,549,543 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,442,401,075 (Within Confidence Interval)
State Upper Limit: 4,692,449,495 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,953,003,643 (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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