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2012 Confidence Interval Detail
036/Chambers
036-903/East Chambers ISD

Category Summary

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

Stratum
Variance
A 32,683,050 1.0522 31,061,633 10 608 .032629822
A 31,870,070 1.0271 31,029,179 10 337 .003075749
A 34,195,730 1.0307 33,177,190 10 254 .000385343
A 34,033,570 0.9989 34,071,048 9 164 .003526219
D3 31,558,970 0.9963 31,676,172 15 2,180 .031273836
F1 8,649,490 0.9959 8,685,099 9 84 .002906956
F1 9,584,350 1.0886 8,804,290 7 28 .010251580
F1 6,549,670 0.9518 6,881,351 4 6 .006233742
G1 10,446,398 0.9494 11,003,158 7 23 .129760903
Random Totals: 199,571,298   196,389,120 81 3,684  
Catg J Exception Values: 1,105,096   969,095      
Catg D1 Exception Values: 5,177,010   7,028,904      
Catg F1 Exception Values: 10,870,960   9,773,120      
Catg G1 Exception Values: 4,044,415   3,863,606      
Total Test Values (4): 220,768,779   218,023,845      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,901,192

Confidence Interval Values (5)

State Lower Limit: 207,122,653 (State Test Value minus Margin of Error Percent)
Local Test Value: 220,768,779 (Within Confidence Interval)
State Upper Limit: 228,925,037 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 249,970,321 (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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