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2006 Confidence Interval Detail
187/Polk
187-903/Goodrich ISD

Category Summary

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

Stratum
Variance
A 9,165,170 1.0216 8,971,388 9 320 .043573662
A 9,133,297 0.9405 9,711,108 10 175 .004810536
A 9,168,679 0.9536 9,614,806 17 112 .011602040
A 9,129,196 1.0600 8,612,449 22 61 .019643872
C 943,236 1.0359 910,547 11 678 .077511178
C 947,210 0.9855 961,147 11 388 .000855800
C 941,214 1.0149 927,396 10 235 .000649652
C 940,043 1.0161 925,148 10 116 .000742154
D3 6,393,678 1.1550 5,535,652 18 425 .166075006
G1 11,891,660 0.9004 13,207,086 10 25 .048648522
Random Totals: 58,653,383   59,376,727 128 2,535  
Catg J Exception Values: 3,027,583   2,678,024      
Catg D1 Exception Values: 3,868,049   3,533,390      
Catg G1 Exception Values: 2,978,340   3,074,119      
Total Test Values (4): 68,527,355   68,662,260      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,433,113

Confidence Interval Values (5)

State Lower Limit: 65,229,147 (State Test Value minus Margin of Error Percent)
Local Test Value: 68,527,355 (Within Confidence Interval)
State Upper Limit: 72,095,373 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 82,255,725 (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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