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2011 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 13,090,871 0.9606 13,627,807 10 644 .006198530
A 12,928,482 1.0096 12,805,549 10 362 .015193845
A 13,178,339 0.9230 14,277,724 10 233 .023334795
A 13,335,549 0.9799 13,609,092 10 117 .007169555
D3 21,101,377 0.9947 21,213,810 20 2,595 .000848060
G1 17,188,863 0.9789 17,559,366 8 32 .007374965
Random Totals: 90,823,481   93,093,348 68 3,983  
Catg J Exception Values: 7,198,281   7,545,887      
Catg D1 Exception Values: 41,549,853   42,007,035      
Catg G1 Exception Values: 40,271,847   38,971,015      
Total Test Values (4): 179,843,462   181,617,285      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,080,864

Confidence Interval Values (5)

State Lower Limit: 172,536,421 (State Test Value minus Margin of Error Percent)
Local Test Value: 179,843,462 (Within Confidence Interval)
State Upper Limit: 190,698,149 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 181,686,384 (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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