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2007 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 514,897,735 0.9386 548,580,583 39 4,931 .010185603
A 514,618,216 0.9710 529,987,864 39 2,553 .009471289
A 514,731,012 0.9556 538,646,936 37 1,701 .006673301
A 514,577,291 0.9682 531,478,301 36 1,054 .006340759
C 43,022,951 0.9803 43,887,535 9 3,383 .002240543
C 43,041,127 0.9188 46,844,936 8 1,478 .023902885
C 43,023,091 0.9458 45,488,572 17 779 .022772968
C 42,919,219 0.9877 43,453,700 14 297 .006363109
D3 230,472,560 0.9769 235,922,367 13 2,321 .077629375
F1 37,726,753 0.9518 39,637,269 7 203 .004862808
F1 37,997,747 0.9365 40,574,209 7 79 .013001943
F1 38,023,961 0.9761 38,954,985 6 35 .016467422
F1 36,274,885 0.9378 38,680,833 5 8 .000169554
Random Totals: 2,611,326,548   2,722,138,090 237 18,822  
Catg D1 Exception Values: 20,666,513   20,214,602      
Total Test Values (4): 2,631,993,061   2,742,352,692      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 137,117,635

Confidence Interval Values (5)

State Lower Limit: 2,605,235,057 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,631,993,061 (Within Confidence Interval)
State Upper Limit: 2,879,470,327 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,672,954,570 (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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