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2007 Confidence Interval Detail
090/Gray
090-903/McLean ISD

Category Summary

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

Stratum
Variance
D3 7,669,440 0.7741 9,907,557 20 226,246 .470964678
G1 23,500,670 0.9148 25,689,408 15 241 .099586611
G1 23,283,112 1.0340 22,517,516 15 114 .007780535
G1 23,614,871 1.0601 22,276,079 15 69 .014473320
G1 23,017,467 1.0646 21,620,766 15 34 .028343388
Random Totals: 101,085,560   102,011,326 80 226,704  
Catg J Exception Values: 3,694,185   3,516,610      
Catg D1 Exception Values: 8,611,600   11,849,606      
Total Test Values (4): 113,391,345   117,377,542      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,868,877

Confidence Interval Values (5)

State Lower Limit: 111,508,665 (State Test Value minus Margin of Error Percent)
Local Test Value: 113,391,345 (Within Confidence Interval)
State Upper Limit: 123,246,419 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 141,872,335 (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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