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2009 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 37,737,081 0.9536 39,573,281 17 1,037 .052883816
A 41,772,651 0.9916 42,126,514 15 565 .075228048
A 39,435,900 1.0826 36,427,028 15 326 .013171014
A 38,010,480 1.1604 32,756,360 16 197 .015404716
D3 85,181,233 0.9265 91,938,730 20 3,731 .030650436
F1 9,716,523 1.0155 9,568,216 9 164 .014346798
F1 9,834,620 1.0400 9,456,365 10 50 .064234590
F1 11,475,440 0.8065 14,228,692 6 20 .016858200
Random Totals: 273,163,928   276,075,186 108 6,090  
Catg J Exception Values: 35,923,900   35,491,795      
Catg D1 Exception Values: 12,862,843   11,656,376      
Catg F1 Exception Values: 8,531,020   8,796,030      
Total Test Values (4): 330,481,691   332,019,387      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 16,600,969

Confidence Interval Values (5)

State Lower Limit: 315,418,418 (State Test Value minus Margin of Error Percent)
Local Test Value: 330,481,691 (Within Confidence Interval)
State Upper Limit: 348,620,356 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 991,925,078 (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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