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2009 Confidence Interval Detail
050/Coryell
050-909/Jonesboro ISD

Category Summary

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

Stratum
Variance
A 5,443,510 0.9850 5,526,406 8 115 .016227377
A 5,474,295 0.9728 5,627,359 7 69 .004067945
A 4,186,600 0.9536 4,390,310 7 35 .010989088
A 4,826,710 0.9535 5,062,098 6 23 .011624965
D3 11,237,956 0.9606 11,698,892 14 998 .010131902
Random Totals: 31,169,071   32,305,065 42 1,240  
Catg J Exception Values: 1,748,630   1,827,468      
Catg D1 Exception Values: 5,663,602   5,750,057      
Total Test Values (4): 38,581,303   39,882,590      

Margin of Error

Margin of Error Percent: 5.0000013
Margin of Error Value: 1,994,130

Confidence Interval Values (5)

State Lower Limit: 37,888,460 (State Test Value minus Margin of Error Percent)
Local Test Value: 38,581,303 (Within Confidence Interval)
State Upper Limit: 41,876,720 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 36,817,986 (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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