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2006 Confidence Interval Detail
245/Willacy
245-904/San Perlita ISD

Category Summary

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

Stratum
Variance
A 6,114,183 0.9758 6,265,816 7 264 .024845798
A 6,124,126 0.9628 6,360,746 7 142 .010244216
A 6,125,101 0.9713 6,306,086 6 84 .004229621
A 6,058,473 0.9907 6,115,346 6 45 .018342894
C 604,442 0.8302 728,068 7 211 .099388442
C 591,909 0.9206 642,960 6 79 .056522137
C 631,085 0.8749 721,322 6 29 .049137233
D3 3,194,801 1.0140 3,150,691 9 625 .007998528
Random Totals: 29,444,120   30,291,035 54 1,479  
Catg J Exception Values: 1,374,230   1,403,009      
Catg D1 Exception Values: 16,917,951   16,488,398      
Catg C Exception Values: 3,002,277   3,002,277      
Total Test Values (4): 50,738,578   51,184,719      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 2,559,236

Confidence Interval Values (5)

State Lower Limit: 48,625,483 (State Test Value minus Margin of Error Percent)
Local Test Value: 50,738,578 (Within Confidence Interval)
State Upper Limit: 53,743,955 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 57,094,979 (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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