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2009 Confidence Interval Detail
114/Howard
058-909/Sands ISD

Category Summary

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

Stratum
Variance
D3 5,111,216 1.0450 4,891,116 13 628 .008967587
G1 4,354,298 0.9050 4,811,379 11 22 .091623381
G1 5,294,071 0.8871 5,967,840 6 8 .104906466
Random Totals: 14,759,585   15,670,335 30 658  
Catg J Exception Values: 818,820   806,557      
Catg D1 Exception Values: 17,219,682   18,081,550      
Catg G1 Exception Values: 12,564,700   9,961,536      
Total Test Values (4): 45,362,787   44,519,978      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 2,225,999

Confidence Interval Values (5)

State Lower Limit: 42,293,979 (State Test Value minus Margin of Error Percent)
Local Test Value: 45,362,787 (Within Confidence Interval)
State Upper Limit: 46,745,977 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,650,735 (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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