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2009 Confidence Interval Detail
169/Montague
169-908/Montague ISD

Category Summary

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

Stratum
Variance
A 2,074,110 1.0415 1,991,464 9 49 .022226381
A 2,208,750 0.9415 2,345,990 6 32 .020490683
A 2,195,700 0.9939 2,209,176 5 22 .000280605
A 2,240,510 1.0090 2,220,525 7 13 .002005492
D3 14,685,500 0.9555 15,369,440 20 431 .013955288
G1 3,483,710 0.8648 4,028,342 6 33 .218512188
Random Totals: 26,888,280   28,164,937 53 580  
Catg J Exception Values: 484,405   468,513      
Catg D1 Exception Values: 1,105,910   1,000,849      
Catg G1 Exception Values: 1,075,050   1,124,695      
Total Test Values (4): 29,553,645   30,758,994      

Margin of Error

Margin of Error Percent: 5.3280416
Margin of Error Value: 1,638,852

Confidence Interval Values (5)

State Lower Limit: 29,120,142 (State Test Value minus Margin of Error Percent)
Local Test Value: 29,553,645 (Within Confidence Interval)
State Upper Limit: 32,397,846 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 29,086,171 (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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