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2009 Confidence Interval Detail
177/Nolan
177-901/Roscoe ISD

Category Summary

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

Stratum
Variance
A 4,250,250 0.8643 4,917,563 9 228 .138296808
A 2,275,159 0.8701 2,614,825 10 60 .042457436
A 3,763,473 1.0129 3,715,543 11 69 .011031982
A 12,262,116 0.9354 13,108,954 10 142 .014932317
D3 15,633,867 0.9144 17,097,405 22 726 .099618317
L1 1,036,220 0.7739 1,338,959 5 17 .169905652
L1 941,141 1.0198 922,868 5 6 .001560971
Random Totals: 40,162,226   43,716,117 72 1,248  
Catg J Exception Values: 8,733,117   8,657,584      
Catg D1 Exception Values: 9,213,499   11,325,459      
Catg L1 Exception Values: 5,566,002   5,238,428      
Total Test Values (4): 63,674,844   68,937,588      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,446,879

Confidence Interval Values (5)

Local Test Value: 63,674,844 (Outside Confidence Interval)
State Lower Limit: 65,490,709 (State Test Value minus Margin of Error Percent)
State Upper Limit: 72,384,467 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 279,345,906 (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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