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2010 Confidence Interval Detail
246/Williamson
246-907/Jarrell ISD

Category Summary

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

Stratum
Variance
A 133,119,678 0.9742 136,645,122 59 1,092 .004363620
A 132,659,419 0.9830 134,953,631 35 756 .010019208
A 119,894,769 0.9591 125,007,579 12 540 .006573404
A 120,170,390 0.9744 123,327,576 14 352 .005841263
D3 78,396,431 0.9776 80,192,749 18 1,643 .014639588
F1 11,749,167 1.0107 11,624,782 8 56 .000530033
F1 12,008,715 0.9775 12,285,130 7 22 .000437272
F1 8,600,284 0.9817 8,760,603 5 7 .002332038
F1 10,573,509 0.9120 11,593,760 2 3 .000490765
Random Totals: 627,172,362   644,390,932 160 4,471  
Catg J Exception Values: 6,620,476   6,027,028      
Catg D1 Exception Values: 4,834,332   4,148,355      
Total Test Values (4): 638,627,170   654,566,315      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 32,728,316

Confidence Interval Values (5)

State Lower Limit: 621,837,999 (State Test Value minus Margin of Error Percent)
Local Test Value: 638,627,170 (Within Confidence Interval)
State Upper Limit: 687,294,631 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 621,318,481 (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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