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2011 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 712,465,964 1.0318 690,507,815 25 7,601 .027505987
A 777,486,117 1.0292 755,427,630 25 6,128 .017818410
A 722,886,808 1.0513 687,612,297 25 4,148 .009887081
A 700,347,189 1.0083 694,582,157 25 1,976 .007163382
B 86,125,720 0.9617 89,555,703 10 247 .011954814
B 61,286,781 0.6923 88,526,334 5 8 .002205584
B 95,827,262 0.7735 123,887,863 4 9 .007305539
B 128,370,709 0.8960 143,270,881 3 6 .002099731
F1 191,406,822 0.8374 228,572,751 10 196 .084897982
F1 187,959,776 0.8943 210,175,306 9 64 .017789885
F1 184,226,180 0.8018 229,765,752 7 26 .029105762
F1 184,165,048 0.9056 203,362,465 5 9 .008409921
Random Totals: 4,032,554,376   4,145,246,954 153 20,418  
Catg D1 Exception Values: 1,083,392   763,319      
Total Test Values (4): 4,033,637,768   4,146,010,273      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 207,300,514

Confidence Interval Values (5)

State Lower Limit: 3,938,709,759 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,033,637,768 (Within Confidence Interval)
State Upper Limit: 4,353,310,787 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,726,947,901 (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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