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2010 Confidence Interval Detail
090/Gray
090-902/Lefors ISD

Category Summary

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

Stratum
Variance
A 5,845,190 0.9463 6,176,889 14 332 .003345109
G1 31,720,478 1.0384 30,547,456 9 77 .003265738
G1 32,738,788 1.0295 31,800,668 7 22 .007390892
G1 32,940,004 1.0192 32,319,470 5 11 .004479115
G1 29,246,050 1.0245 28,546,657 2 3 .000000016
Random Totals: 132,490,510   129,391,140 37 445  
Catg J Exception Values: 1,780,681   2,110,116      
Catg D1 Exception Values: 2,386,410   4,550,803      
Total Test Values (4): 136,657,601   136,052,059      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,802,603

Confidence Interval Values (5)

State Lower Limit: 129,249,456 (State Test Value minus Margin of Error Percent)
Local Test Value: 136,657,601 (Within Confidence Interval)
State Upper Limit: 142,854,662 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 157,466,652 (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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