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2008 Confidence Interval Detail
154/Madison
154-901/Madisonville CISD

Category Summary

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

Stratum
Variance
A 19,390,639 0.8765 22,122,805 13 611 .094264039
A 25,146,900 0.9037 27,826,602 14 418 .023175275
A 28,966,860 0.9718 29,807,430 14 311 .021116339
A 36,281,170 0.9636 37,651,692 13 232 .030265288
D3 109,757,921 0.7197 152,505,101 17 5,724 .120972324
F1 8,440,230 0.9386 8,992,361 7 134 .030012937
F1 9,804,640 0.8571 11,439,319 6 42 .024504379
F1 9,633,980 0.9400 10,248,915 4 18 .003699456
F1 10,212,600 0.9130 11,185,761 5 9 .018077521
G1 16,448,618 1.0139 16,223,117 6 37 .001859487
G1 15,588,995 1.0172 15,325,398 5 9 .001290947
Random Totals: 289,672,553   343,328,501 104 7,545  
Catg J Exception Values: 15,167,796   14,997,268      
Catg D1 Exception Values: 12,303,601   13,006,462      
Catg G1 Exception Values: 30,812,382   28,223,486      
Total Test Values (4): 347,956,332   399,555,717      

Margin of Error

Margin of Error Percent: 6.5775878
Margin of Error Value: 26,281,128

Confidence Interval Values (5)

Local Test Value: 347,956,332 (Outside Confidence Interval)
State Lower Limit: 373,274,589 (State Test Value minus Margin of Error Percent)
State Upper Limit: 425,836,845 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 362,308,971 (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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