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2008 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 512,019,672 0.9016 567,901,145 13 5,014 .018664330
A 592,996,736 0.9924 597,538,025 10 3,171 .002371752
A 584,562,676 1.0125 577,345,853 5 2,008 .003676756
A 746,254,329 0.9988 747,150,910 11 1,578 .005760152
C 39,595,785 0.9532 41,539,850 10 3,020 .093024410
C 35,275,480 1.0063 35,054,636 6 1,176 .024956251
C 54,535,410 0.8513 64,061,330 7 900 .023928266
C 58,192,800 0.8956 64,976,329 8 382 .028731706
D3 257,132,454 0.8774 293,061,835 12 2,329 .050045364
F1 41,047,154 0.6630 61,911,243 8 228 .249369646
F1 44,099,640 0.9135 48,275,468 6 105 .008849337
F1 44,742,970 0.8945 50,020,089 6 47 .002052530
F1 63,335,020 0.9800 64,627,571 4 15 .001698423
Random Totals: 3,073,790,126   3,213,464,284 106 19,973  
Catg D1 Exception Values: 20,777,223   20,322,296      
Total Test Values (4): 3,094,567,349   3,233,786,580      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 161,689,329

Confidence Interval Values (5)

State Lower Limit: 3,072,097,251 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,094,567,349 (Within Confidence Interval)
State Upper Limit: 3,395,475,909 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,067,408,445 (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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