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2010 Confidence Interval Detail
070/Ellis
070-912/Waxahachie ISD

Category Summary

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

Stratum
Variance
A 328,595,000 0.9856 333,395,901 50 3,801 .008208550
A 332,407,691 0.9894 335,968,962 50 2,597 .003514875
A 293,248,522 0.9830 298,319,961 50 1,690 .004156457
A 312,580,552 1.0026 311,769,950 32 1,086 .001380432
D3 137,638,375 0.9942 138,441,335 15 3,325 .008792831
F1 84,460,880 0.9547 88,468,503 10 291 .005919974
F1 83,206,743 1.0555 78,831,590 10 92 .022429764
F1 80,472,589 0.9396 85,645,582 9 35 .013863648
F1 82,783,160 0.9945 83,240,985 6 11 .001225881
L1 32,014,018 1.0418 30,729,524 10 356 .011062924
L1 34,858,130 0.9837 35,435,732 9 89 .002441636
L1 33,387,010 1.0116 33,004,162 7 23 .008757464
L1 34,466,545 0.9704 35,517,874 3 5 .006655998
Random Totals: 1,870,119,215   1,888,770,061 261 13,401  
Catg J Exception Values: 75,092,396   85,131,900      
Catg D1 Exception Values: 15,099,853   14,383,531      
Total Test Values (4): 1,960,311,464   1,988,285,492      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 99,414,275

Confidence Interval Values (5)

State Lower Limit: 1,888,871,217 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,960,311,464 (Within Confidence Interval)
State Upper Limit: 2,087,699,767 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,737,137,676 (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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