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2011 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 291,268,299 1.0148 287,020,397 34 4,523 .018188334
A 271,592,533 0.9962 272,628,521 39 2,198 .010180590
A 299,362,080 1.0315 290,220,145 38 1,755 .008512186
A 346,020,268 1.0158 340,638,185 45 1,250 .010173434
B 157,983,046 1.0131 155,940,229 10 29 .007297576
C 26,396,350 1.0003 26,388,433 11 3,654 .021701017
C 20,558,980 1.0378 19,810,156 19 807 .019471816
C 38,403,270 1.0263 37,419,146 23 727 .012938859
C 23,888,180 0.9748 24,505,724 10 30 .000684087
F1 94,355,440 0.9945 94,877,265 12 306 .019640435
F1 82,228,610 0.9381 87,654,419 9 56 .015085641
F1 91,962,410 1.0313 89,171,347 6 18 .002686863
L1 42,363,218 0.9729 43,543,240 11 350 .004527725
L1 44,271,993 0.9856 44,918,824 9 63 .000877565
L1 49,804,547 0.9822 50,707,134 5 12 .001537653
Random Totals: 1,880,459,224   1,865,443,165 281 15,778  
Catg D1 Exception Values: 16,952,570   16,869,877      
Catg F1 Exception Values: 77,555,870   77,882,372      
Catg L1 Exception Values: 99,096,612   100,270,224      
Total Test Values (4): 2,074,064,276   2,060,465,638      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 103,023,282

Confidence Interval Values (5)

State Lower Limit: 1,957,442,356 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,074,064,276 (Within Confidence Interval)
State Upper Limit: 2,163,488,920 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,121,857,203 (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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