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2011 Confidence Interval Detail
229/Tyler
229-905/Spurger ISD

Category Summary

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

Stratum
Variance
A 7,054,512 0.9526 7,405,534 10 238 .006584734
A 7,267,997 1.0059 7,225,367 10 132 .025092983
A 7,029,000 1.0401 6,758,004 11 89 .025217449
A 6,639,405 1.0182 6,520,728 10 49 .004725488
D3 16,860,528 0.9856 17,106,867 15 1,023 .040238831
G1 16,912,640 1.0054 16,821,802 11 28 .001966346
Random Totals: 61,764,082   61,838,302 67 1,559  
Catg D1 Exception Values: 9,226,180   8,946,999      
Total Test Values (4): 70,990,262   70,785,301      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,539,265

Confidence Interval Values (5)

State Lower Limit: 67,246,036 (State Test Value minus Margin of Error Percent)
Local Test Value: 70,990,262 (Within Confidence Interval)
State Upper Limit: 74,324,566 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 65,677,924 (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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