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2011 Confidence Interval Detail
170/Montgomery
170-906/Magnolia ISD

Category Summary

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

Stratum
Variance
A 654,806,671 1.0250 638,835,777 39 5,437 .012570310
A 676,873,128 1.0268 659,206,397 24 3,199 .009473913
A 696,786,874 1.0041 693,941,713 50 2,108 .013169804
A 727,093,894 1.0404 698,859,952 41 1,354 .029084955
D3 295,449,356 0.9005 328,094,787 19 2,378 .137392702
F1 57,069,749 0.9940 57,414,234 10 248 .015461637
F1 63,020,700 0.9554 65,962,633 10 117 .022532987
F1 61,471,760 0.9415 65,291,301 8 46 .005665806
F1 55,039,620 0.9192 59,877,742 4 8 .009340743
Random Totals: 3,287,611,752   3,267,484,536 205 14,895  
Catg D1 Exception Values: 19,962,175   19,558,058      
Total Test Values (4): 3,307,573,927   3,287,042,594      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 164,352,130

Confidence Interval Values (5)

State Lower Limit: 3,122,690,464 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,307,573,927 (Within Confidence Interval)
State Upper Limit: 3,451,394,724 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,685,023,739 (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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