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2008 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 92,742,912 0.9474 97,892,033 34 1,787 .029467910
A 96,956,815 0.9047 107,170,128 24 999 .034821153
A 105,985,570 0.9574 110,701,452 35 765 .014085184
A 108,622,413 1.0270 105,766,712 15 486 .016198710
D3 85,977,560 1.0471 82,110,171 19 5,867 .047025310
F1 21,931,477 0.9127 24,029,229 11 269 .025401136
F1 22,424,951 0.7402 30,295,800 7 98 .173598814
F1 22,206,265 0.8653 25,663,082 6 31 .030134828
F1 21,719,262 0.9384 23,144,994 4 9 .025011688
G1 83,997,875 1.1248 74,678,054 8 88 .062677721
G1 84,022,640 1.0322 81,401,511 6 37 .012882111
G1 83,849,165 0.9359 89,592,013 6 20 .058034809
G1 80,849,220 1.0681 75,694,429 4 7 .001938595
Random Totals: 911,286,125   928,139,608 179 10,463  
Catg J Exception Values: 35,650,017   36,067,315      
Catg D1 Exception Values: 59,661,070   64,450,267      
Total Test Values (4): 1,006,597,212   1,028,657,190      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 51,432,860

Confidence Interval Values (5)

State Lower Limit: 977,224,330 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,006,597,212 (Within Confidence Interval)
State Upper Limit: 1,080,090,050 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,092,345,792 (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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