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2009 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 328,176,424 0.9808 334,600,759 30 3,763 .028492556
A 317,075,726 0.9983 317,615,673 68 2,445 .004824234
A 313,354,397 1.0062 311,423,571 54 1,797 .004289956
A 312,143,465 1.0575 295,171,125 27 1,073 .109612315
D3 149,660,856 0.9798 152,746,332 28 3,457 .011932995
F1 80,681,262 0.9219 87,516,284 13 289 .115054856
F1 90,367,455 0.9951 90,812,436 14 98 .041602714
F1 96,302,858 1.0219 94,239,023 12 35 .010807931
F1 69,151,829 0.9519 72,646,107 6 8 .002982071
L1 35,599,474 0.9087 39,176,267 8 391 .036829148
L1 36,305,840 1.0397 34,919,534 7 88 .030660475
L1 29,505,639 0.9631 30,636,112 6 20 .004712459
L1 37,267,120 1.0433 35,720,426 3 5 .003596025
Random Totals: 1,895,592,345   1,897,223,649 276 13,469  
Catg D1 Exception Values: 14,321,354   13,380,961      
Total Test Values (4): 1,909,913,699   1,910,604,610      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 95,530,231

Confidence Interval Values (5)

State Lower Limit: 1,815,074,379 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,909,913,699 (Within Confidence Interval)
State Upper Limit: 2,006,134,841 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,755,361,573 (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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