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2011 Confidence Interval Detail
166/Milam
166-904/Rockdale ISD

Category Summary

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

Stratum
Variance
A 39,025,474 0.9381 41,600,548 13 1,040 .016847887
A 39,982,889 0.9700 41,219,473 11 538 .008558249
A 38,701,860 0.9485 40,803,226 11 331 .007379034
A 40,449,060 1.0589 38,199,131 11 219 .018019160
D3 91,747,710 1.0258 89,440,154 15 3,726 .045535833
F1 11,431,247 0.9464 12,078,663 9 172 .009309325
F1 10,492,270 0.8677 12,092,048 8 47 .073141930
F1 10,145,240 0.8136 12,469,567 6 16 .101349079
L1 6,573,240 1.0108 6,503,008 9 150 .012913550
L1 5,151,210 0.9764 5,275,717 7 21 .002480975
L1 5,478,460 0.9763 5,611,451 3 4 .001044893
Random Totals: 299,178,660   305,292,986 103 6,264  
Catg J Exception Values: 9,666,408   9,209,824      
Catg D1 Exception Values: 11,314,608   11,265,339      
Catg F1 Exception Values: 9,751,490   10,808,274      
Catg L1 Exception Values: 4,179,980   4,238,639      
Total Test Values (4): 334,091,146   340,815,062      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 17,040,753

Confidence Interval Values (5)

State Lower Limit: 323,774,309 (State Test Value minus Margin of Error Percent)
Local Test Value: 334,091,146 (Within Confidence Interval)
State Upper Limit: 357,855,815 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,186,536,612 (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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