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2008 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 217,952,333 0.8848 246,329,490 11 4,014 .058318330
A 225,765,058 0.9625 234,561,099 14 2,094 .008143300
A 263,324,900 0.9329 282,264,873 16 1,760 .012202355
A 274,509,310 0.9079 302,356,328 15 1,077 .013780231
B 109,153,473 0.9612 113,559,585 16 27 .004292329
C 24,137,460 1.0566 22,844,463 7 3,865 .009442327
C 29,642,420 0.9452 31,361,003 7 1,418 .001080396
C 24,021,930 0.7976 30,117,766 8 755 .096669405
C 48,777,907 0.9947 49,037,807 7 240 .018420306
F1 78,080,885 0.8778 88,950,655 6 296 .107521690
F1 83,008,950 1.0069 82,440,113 5 58 .006391026
F1 63,146,180 1.0412 60,647,503 5 11 .008884997
L1 37,120,477 1.1077 33,511,309 7 354 .030222529
L1 38,110,914 1.0791 35,317,314 6 60 .014399944
L1 36,963,707 1.0147 36,428,212 5 12 .007681062
L1 44,308,959 1.2107 36,597,802 2 4 .122912130
Random Totals: 1,598,024,863   1,686,325,322 137 16,045  
Catg D1 Exception Values: 16,604,011   16,545,287      
Catg F1 Exception Values: 29,370,990   27,894,142      
Catg L1 Exception Values: 61,180,169   59,818,496      
Total Test Values (4): 1,705,180,033   1,790,583,247      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 89,529,162

Confidence Interval Values (5)

State Lower Limit: 1,701,054,085 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,705,180,033 (Within Confidence Interval)
State Upper Limit: 1,880,112,409 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,816,188,052 (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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