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2008 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 6,411,631 0.9754 6,573,335 15 275 .019914567
A 6,717,780 0.9587 7,007,176 15 147 .031785917
A 6,866,574 0.9945 6,904,549 15 87 .024074617
A 8,645,013 0.9666 8,943,734 13 57 .007713232
C 1,098,856 0.9239 1,189,367 8 232 .023600409
C 961,988 0.9969 964,979 6 88 .004843212
C 942,577 0.9948 947,504 7 35 .013648599
C 902,795 0.9761 924,900 5 18 .000026410
D3 3,447,410 0.9859 3,496,714 20 623 .006496851
Random Totals: 35,994,624   36,952,258 104 1,562  
Catg J Exception Values: 1,652,756   1,626,322      
Catg D1 Exception Values: 16,794,255   16,889,954      
Total Test Values (4): 54,441,635   55,509,150      

Margin of Error

Margin of Error Percent: 5.0000009
Margin of Error Value: 2,775,458

Confidence Interval Values (5)

State Lower Limit: 52,733,692 (State Test Value minus Margin of Error Percent)
Local Test Value: 54,441,635 (Within Confidence Interval)
State Upper Limit: 58,284,608 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 61,001,459 (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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