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2007 Confidence Interval Detail
170/Montgomery
170-908/New Caney ISD

Category Summary

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

Stratum
Variance
A 228,144,484 1.0519 216,887,997 17 4,015 .018251814
A 228,027,517 0.9387 242,918,416 25 2,000 .025008172
A 227,951,438 0.9916 229,882,451 27 1,398 .011698198
A 227,844,369 0.9582 237,783,729 30 843 .006724583
C 23,792,965 0.9330 25,501,570 8 4,006 .002874817
C 21,709,479 0.8853 24,522,172 7 1,043 .009388403
C 22,723,239 0.9936 22,869,604 7 714 .006929251
C 22,561,745 0.9968 22,634,174 7 183 .001273847
F1 69,438,437 0.9603 72,309,109 7 268 .028732220
F1 71,856,784 0.8349 86,066,336 7 40 .150233946
F1 85,758,124 0.9621 89,136,393 4 9 .007525700
L1 32,406,466 1.0371 31,247,195 8 307 .015424835
L1 33,383,190 0.9728 34,316,602 7 55 .007955665
L1 32,062,735 0.9417 34,047,717 4 7 .005702963
L1 31,159,822 1.0154 30,687,239 2 3 .000889363
Random Totals: 1,358,820,794   1,400,810,704 167 14,891  
Catg D1 Exception Values: 17,637,040   17,570,043      
Catg F1 Exception Values: 46,797,490   46,725,188      
Catg L1 Exception Values: 61,363,748   62,890,588      
Total Test Values (4): 1,484,619,072   1,527,996,523      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 76,399,826

Confidence Interval Values (5)

State Lower Limit: 1,451,596,697 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,484,619,072 (Within Confidence Interval)
State Upper Limit: 1,604,396,349 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,600,307,303 (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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