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2006 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 33,897,332 0.9441 35,904,387 13 1,018 .047035521
A 33,911,620 0.9674 35,054,393 14 515 .030746201
A 33,929,047 0.9786 34,671,007 13 320 .023362523
A 33,773,092 1.0244 32,968,657 12 198 .011196994
D3 79,653,359 1.0157 78,422,132 21 3,742 .018415134
F1 8,332,174 0.9620 8,661,304 7 160 .002141489
F1 8,542,348 1.0512 8,126,282 6 52 .023698117
F1 8,825,009 0.9029 9,774,071 7 18 .025732705
F1 7,552,785 0.8918 8,469,147 3 5 .019435670
Random Totals: 248,416,766   252,051,380 96 6,028  
Catg J Exception Values: 27,655,961   32,073,956      
Catg D1 Exception Values: 14,047,460   13,650,361      
Total Test Values (4): 290,120,187   297,775,697      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 14,888,785

Confidence Interval Values (5)

State Lower Limit: 282,886,912 (State Test Value minus Margin of Error Percent)
Local Test Value: 290,120,187 (Within Confidence Interval)
State Upper Limit: 312,664,482 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 645,974,412 (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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