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2009 Confidence Interval Detail
050/Coryell
050-901/Evant ISD

Category Summary

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

Stratum
Variance
A 7,379,410 0.9773 7,550,813 10 180 .022691259
A 6,899,500 0.9572 7,208,003 11 102 .008012132
A 5,923,250 0.9419 6,288,619 10 58 .032993694
A 6,934,340 0.9857 7,034,940 9 37 .004501100
D3 16,012,640 0.9787 16,361,132 25 1,529 .348825792
Random Totals: 43,149,140   44,443,507 65 1,906  
Catg J Exception Values: 1,299,870   1,385,735      
Catg D1 Exception Values: 7,355,662   6,890,793      
Total Test Values (4): 51,804,672   52,720,035      

Margin of Error

Margin of Error Percent: 7.5462336
Margin of Error Value: 3,978,377

Confidence Interval Values (5)

State Lower Limit: 48,741,658 (State Test Value minus Margin of Error Percent)
Local Test Value: 51,804,672 (Within Confidence Interval)
State Upper Limit: 56,698,412 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,041,172 (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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