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2008 Confidence Interval Detail
246/Williamson
246-902/Florence ISD

Category Summary

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

Stratum
Variance
A 21,303,776 0.8997 23,678,755 15 335 .048378221
A 21,111,910 0.9813 21,514,226 15 209 .006170109
A 19,652,602 1.0411 18,876,767 15 129 .011650064
A 36,529,892 0.9984 36,588,433 14 138 .029591098
D3 79,133,795 0.9532 83,019,088 22 1,758 .044316049
Random Totals: 177,731,975   183,677,269 81 2,569  
Catg D1 Exception Values: 4,532,654   3,311,880      
Total Test Values (4): 182,264,629   186,989,149      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,349,457

Confidence Interval Values (5)

State Lower Limit: 177,639,692 (State Test Value minus Margin of Error Percent)
Local Test Value: 182,264,629 (Within Confidence Interval)
State Upper Limit: 196,338,606 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 219,677,566 (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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