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2011 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 46,440,583 0.9722 47,768,549 7 644 .005127541
A 45,872,386 0.9539 48,089,303 16 254 .006735598
A 54,876,583 0.9020 60,838,784 7 189 .018570305
A 51,721,161 0.9449 54,737,180 7 89 .027635292
D3 59,859,043 0.9605 62,320,711 16 2,874 .043263132
G1 18,505,727 1.0160 18,214,298 15 133 .002437723
G1 18,750,261 0.9951 18,842,590 11 67 .001571097
G1 18,549,096 0.9998 18,552,807 8 37 .002270472
G1 18,016,400 0.9941 18,123,328 5 10 .014084865
Random Totals: 332,591,240   347,487,550 92 4,297  
Catg D1 Exception Values: 5,731,337   4,498,772      
Total Test Values (4): 338,322,577   351,986,322      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 17,599,316

Confidence Interval Values (5)

State Lower Limit: 334,387,006 (State Test Value minus Margin of Error Percent)
Local Test Value: 338,322,577 (Within Confidence Interval)
State Upper Limit: 369,585,638 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 358,994,001 (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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