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2007 Confidence Interval Detail
245/Willacy
245-901/Lasara ISD

Category Summary

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

Stratum
Variance
A 2,290,334 0.9568 2,393,744 7 125 .032063534
A 2,278,163 0.9684 2,352,502 6 74 .032049356
A 2,315,613 0.9502 2,436,974 6 48 .024159500
A 2,216,193 0.9270 2,390,715 5 22 .029430363
D3 5,202,361 0.9718 5,353,325 11 703 .023449296
G1 3,760,511 1.2716 2,957,307 11 16 1.058744233
Random Totals: 18,063,175   17,884,567 46 988  
Catg J Exception Values: 258,144   245,042      
Catg D1 Exception Values: 8,405,591   7,943,716      
Catg G1 Exception Values: 4,284,755   5,589,198      
Total Test Values (4): 31,011,665   31,662,523      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,583,126

Confidence Interval Values (5)

State Lower Limit: 30,079,397 (State Test Value minus Margin of Error Percent)
Local Test Value: 31,011,665 (Within Confidence Interval)
State Upper Limit: 33,245,649 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 40,199,864 (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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