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2011 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 5,264,781 0.9776 5,385,414 20 631 .000999949
G1 45,196,833 1.0373 43,571,612 8 35 .017962836
G1 44,971,273 1.0099 44,530,422 6 13 .000922223
G1 43,993,780 1.0127 43,442,066 4 7 .002458075
G1 39,638,014 1.1667 33,974,470 2 3 .168037960
Random Totals: 179,064,681   170,903,984 40 689  
Catg D1 Exception Values: 18,895,303   16,530,593      
Total Test Values (4): 197,959,984   187,434,577      

Margin of Error

Margin of Error Percent: 6.5233113
Margin of Error Value: 12,226,941

Confidence Interval Values (5)

State Lower Limit: 175,207,636 (State Test Value minus Margin of Error Percent)
Local Test Value: 197,959,984 (Within Confidence Interval)
State Upper Limit: 199,661,518 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 221,716,195 (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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