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2009 Confidence Interval Detail
220/Tarrant
220-918/Eagle Mountain-Saginaw ISD

Category Summary

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

Stratum
Variance
A 837,491,443 1.0184 822,360,019 28 7,953 .006733882
A 834,316,738 1.0086 827,202,794 23 6,259 .004185622
A 768,574,847 1.0081 762,399,412 25 4,572 .005670215
A 795,196,062 0.9860 806,486,878 23 2,204 .004846319
F1 226,170,359 0.9344 242,048,757 7 258 .050854171
F1 248,461,753 0.9807 253,351,436 6 88 .022728898
F1 201,666,388 0.8535 236,281,650 6 30 .035342025
F1 231,351,419 0.9197 251,550,961 5 12 .002122406
G1 170,200,504 1.0100 168,515,350 9 173 .005171907
G1 171,772,124 1.0009 171,617,668 6 70 .002688309
G1 169,764,970 1.0098 168,117,419 6 36 .002489741
G1 166,569,981 1.0127 164,481,071 5 19 .003275381
L1 199,240,650 1.0098 197,307,041 7 306 .005489538
L1 207,666,705 1.0017 207,314,271 6 48 .000085987
L1 288,767,286 1.0375 278,329,914 4 16 .008494674
Random Totals: 5,517,211,229   5,557,364,641 166 22,044  
Catg J Exception Values: 97,924,306   95,720,781      
Catg D1 Exception Values: 1,405,383   1,469,861      
Catg L1 Exception Values: 140,091,522   129,118,181      
Total Test Values (4): 5,756,632,440   5,783,673,464      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 289,183,673

Confidence Interval Values (5)

State Lower Limit: 5,494,489,791 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,756,632,440 (Within Confidence Interval)
State Upper Limit: 6,072,857,137 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,424,673,209 (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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