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2007 Confidence Interval Detail
241/Wharton
241-903/El Campo ISD

Category Summary

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

Stratum
Variance
A 94,383,704 0.9249 102,047,469 44 1,892 .033147304
A 94,457,612 0.9649 97,893,680 26 948 .025108996
A 94,342,557 0.9501 99,297,502 32 646 .010366767
A 94,316,316 0.9703 97,203,253 13 394 .013665659
D3 82,695,210 0.9621 85,952,822 25 6,742 .020748485
F1 21,056,779 0.9542 22,067,469 8 269 .041964341
F1 21,343,111 0.8724 24,464,822 8 96 .022615808
F1 21,993,489 0.9310 23,623,511 8 28 .011522848
F1 19,726,388 0.9304 21,202,051 4 7 .002001086
G1 90,015,651 0.9178 98,077,632 7 102 .009025307
G1 88,664,942 0.9744 90,994,399 6 33 .001483527
G1 95,710,664 1.0091 94,847,551 5 14 .000790869
G1 82,834,090 0.9704 85,360,769 3 4 .000882633
Random Totals: 901,540,513   943,032,930 189 11,175  
Catg D1 Exception Values: 55,620,230   57,542,344      
Total Test Values (4): 957,160,743   1,000,575,274      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 50,028,764

Confidence Interval Values (5)

State Lower Limit: 950,546,510 (State Test Value minus Margin of Error Percent)
Local Test Value: 957,160,743 (Within Confidence Interval)
State Upper Limit: 1,050,604,038 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,069,206,662 (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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