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2007 Confidence Interval Detail
070/Ellis
070-903/Ennis ISD

Category Summary

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

Stratum
Variance
A 136,993,381 0.8508 161,017,138 11 2,367 .020302303
A 136,791,890 0.9623 142,150,982 9 1,408 .013336837
A 136,928,714 0.9099 150,487,651 10 952 .008223641
A 136,836,959 0.8745 156,474,510 9 559 .020101563
D3 137,745,779 0.9197 149,772,512 25 4,665 .076912179
F1 35,696,283 0.9827 36,324,700 9 242 .004119331
F1 35,675,871 0.9677 36,866,664 8 84 .003390944
F1 35,657,691 0.9412 37,885,350 7 31 .013796798
F1 35,509,845 0.9750 36,420,354 5 9 .007203889
L1 19,334,174 0.9430 20,502,836 7 254 .203397159
L1 19,653,397 0.9522 20,639,988 6 55 .007852258
L1 18,913,314 1.0563 17,905,249 6 17 .034728857
L1 19,215,918 0.9935 19,341,639 4 6 .011861551
Random Totals: 904,953,216   985,789,573 116 10,649  
Catg J Exception Values: 48,776,530   47,896,556      
Catg D1 Exception Values: 15,248,847   13,305,339      
Total Test Values (4): 968,978,593   1,046,991,468      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 52,349,573

Confidence Interval Values (5)

Local Test Value: 968,978,593 (Outside Confidence Interval)
State Lower Limit: 994,641,895 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,099,341,041 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,568,098,850 (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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