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2008 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 131,119,015 1.0018 130,883,425 38 1,002 .003094083
A 106,578,431 1.0057 105,974,377 39 594 .005172956
A 134,875,903 1.0271 131,317,207 34 598 .003685327
A 149,585,206 0.9703 154,163,873 33 450 .006247008
D3 87,896,444 0.9653 91,056,090 22 1,637 .007426977
Random Totals: 610,054,999   613,394,972 166 4,281  
Catg D1 Exception Values: 4,693,663   3,766,672      
Total Test Values (4): 614,748,662   617,161,644      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 30,858,082

Confidence Interval Values (5)

State Lower Limit: 586,303,562 (State Test Value minus Margin of Error Percent)
Local Test Value: 614,748,662 (Within Confidence Interval)
State Upper Limit: 648,019,726 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 624,588,586 (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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