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2009 Confidence Interval Detail
170/Montgomery
170-907/Splendora ISD

Category Summary

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

Stratum
Variance
A 61,887,007 0.9114 67,903,233 15 1,703 .013769176
A 63,476,300 0.9219 68,853,780 15 824 .015847387
A 58,668,920 0.9304 63,057,739 15 362 .004999875
A 73,192,510 1.0105 72,431,974 15 234 .004075055
C 4,287,075 1.0472 4,093,845 7 1,319 .037177360
C 9,882,700 0.9986 9,896,555 7 756 .027313629
C 7,286,560 0.9522 7,652,342 9 285 .002849016
C 4,978,050 1.0410 4,781,988 7 87 .003255402
D3 37,647,268 1.0828 34,768,441 20 965 .032952147
Random Totals: 321,306,390   333,439,897 110 6,535  
Catg J Exception Values: 23,687,673   23,050,990      
Catg D1 Exception Values: 9,106,707   9,055,375      
Total Test Values (4): 354,100,770   365,546,262      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 18,277,313

Confidence Interval Values (5)

State Lower Limit: 347,268,949 (State Test Value minus Margin of Error Percent)
Local Test Value: 354,100,770 (Within Confidence Interval)
State Upper Limit: 383,823,575 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 352,124,237 (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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