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2011 Confidence Interval Detail
229/Tyler
229-906/Chester ISD

Category Summary

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

Stratum
Variance
A 2,878,674 0.8617 3,340,692 10 83 .056921679
A 2,985,281 1.0453 2,855,908 10 55 .003387584
A 3,006,496 0.9085 3,309,297 10 39 .023597297
A 3,253,200 1.0167 3,199,764 10 23 .014819609
D3 9,388,074 0.9565 9,815,028 16 765 .042466482
Random Totals: 21,511,725   22,520,689 56 965  
Catg J Exception Values: 2,409,897   3,138,052      
Catg D1 Exception Values: 10,185,773   9,797,187      
Total Test Values (4): 34,107,395   35,455,928      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,772,796

Confidence Interval Values (5)

State Lower Limit: 33,683,132 (State Test Value minus Margin of Error Percent)
Local Test Value: 34,107,395 (Within Confidence Interval)
State Upper Limit: 37,228,724 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 33,661,883 (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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