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2006 Confidence Interval Detail
025/Brown
025-906/Zephyr ISD

Category Summary

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

Stratum
Variance
A 973,992 0.9331 1,043,824 7 49 .008903530
A 983,489 0.9624 1,021,913 8 24 .000685768
A 985,596 0.9817 1,003,969 6 16 .000909181
D3 15,410,979 1.0441 14,760,060 42 719 .037470802
Random Totals: 18,354,056   17,829,766 63 808  
Catg J Exception Values: 6,559,220   6,653,002      
Catg D1 Exception Values: 3,291,870   2,934,428      
Catg A Exception Values: 789,470   801,517      
Total Test Values (4): 28,994,616   28,218,713      

Margin of Error

Margin of Error Percent: 5.0000012
Margin of Error Value: 1,410,936

Confidence Interval Values (5)

State Lower Limit: 26,807,777 (State Test Value minus Margin of Error Percent)
Local Test Value: 28,994,616 (Within Confidence Interval)
State Upper Limit: 29,629,649 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 27,391,084 (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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