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2006 Confidence Interval Detail
245/Willacy
245-902/Lyford CISD

Category Summary

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

Stratum
Variance
A 10,716,209 0.9862 10,866,162 8 611 .011071759
A 10,717,881 0.9772 10,967,950 7 348 .010263182
A 10,701,511 1.0222 10,469,097 7 237 .014154933
A 10,674,401 0.9682 11,024,996 8 126 .014834264
D3 17,990,280 1.0118 17,780,470 20 3,075 .021089444
G1 26,344,954 0.9579 27,502,823 14 37 .013824120
L1 1,231,108 0.9409 1,308,437 7 26 .016181070
L1 1,607,525 1.0003 1,607,043 3 5 .000083869
Random Totals: 89,983,869   91,526,978 74 4,465  
Catg J Exception Values: 6,950,101   6,887,095      
Catg D1 Exception Values: 48,778,208   49,172,011      
Catg G1 Exception Values: 9,845,374   9,603,908      
Catg L1 Exception Values: 5,759,397   5,698,473      
Total Test Values (4): 161,316,949   162,888,465      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,144,423

Confidence Interval Values (5)

State Lower Limit: 154,744,042 (State Test Value minus Margin of Error Percent)
Local Test Value: 161,316,949 (Within Confidence Interval)
State Upper Limit: 171,032,888 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 166,640,091 (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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