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2009 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 9,352,140 0.8929 10,473,894 15 303 .073611166
A 9,320,373 0.9645 9,663,425 17 169 .014082608
A 11,800,650 0.9360 12,607,532 16 147 .023813720
A 14,411,410 0.9905 14,549,631 18 102 .046097910
D3 8,658,033 1.0169 8,514,144 21 425 .010424164
G1 5,448,220 0.8817 6,179,222 10 26 .112713466
Random Totals: 58,990,826   61,987,848 97 1,172  
Catg J Exception Values: 3,762,075   3,776,012      
Catg D1 Exception Values: 3,933,714   3,943,513      
Catg G1 Exception Values: 1,408,500   2,674,414      
Total Test Values (4): 68,095,115   72,381,787      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,619,089

Confidence Interval Values (5)

Local Test Value: 68,095,115 (Outside Confidence Interval)
State Lower Limit: 68,762,698 (State Test Value minus Margin of Error Percent)
State Upper Limit: 76,000,876 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 94,828,777 (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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