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2009 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 2,300,269 1.0097 2,278,171 7 126 .043886791
A 2,477,425 1.0152 2,440,332 6 80 .028023894
A 2,449,067 0.8776 2,790,642 6 48 .012826719
A 2,432,730 0.9265 2,625,720 5 25 .029357655
D3 7,016,332 1.0569 6,638,596 20 702 .043699345
G1 4,621,456 0.9868 4,683,275 15 29 .010895909
Random Totals: 21,297,279   21,456,736 59 1,010  
Catg J Exception Values: 90,222   94,922      
Catg D1 Exception Values: 8,039,482   8,234,602      
Catg G1 Exception Values: 2,790,627   2,474,174      
Total Test Values (4): 32,217,610   32,260,434      

Margin of Error

Margin of Error Percent: 5.0000009
Margin of Error Value: 1,613,022

Confidence Interval Values (5)

State Lower Limit: 30,647,412 (State Test Value minus Margin of Error Percent)
Local Test Value: 32,217,610 (Within Confidence Interval)
State Upper Limit: 33,873,456 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 37,489,399 (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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