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2008 Confidence Interval Detail
212/Smith
212-901/Arp ISD

Category Summary

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

Stratum
Variance
A 42,329,500 0.8164 51,848,971 9 634 .052375505
A 44,809,900 0.9810 45,677,778 14 274 .005646475
A 43,460,100 0.9248 46,994,053 8 164 .011329276
A 47,820,600 0.9757 49,011,581 7 92 .003373581
D3 50,245,600 0.9228 54,449,068 11 2,209 .229726678
G1 45,961,976 0.9924 46,313,962 7 128 .000444890
G1 45,822,802 0.9775 46,877,547 6 71 .012580650
G1 46,551,536 0.9751 47,740,269 6 49 .003517345
G1 44,481,034 1.0470 42,484,273 5 18 .006529353
Random Totals: 411,483,048   431,397,502 73 3,639  
Catg D1 Exception Values: 7,139,723   4,788,269      
Total Test Values (4): 418,622,771   436,185,771      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 21,809,289

Confidence Interval Values (5)

State Lower Limit: 414,376,482 (State Test Value minus Margin of Error Percent)
Local Test Value: 418,622,771 (Within Confidence Interval)
State Upper Limit: 457,995,060 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 451,877,660 (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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