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2009 Confidence Interval Detail
245/Willacy
245-903/Raymondville ISD

Category Summary

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

Stratum
Variance
A 20,978,311 0.9278 22,610,812 7 1,090 .013682435
A 20,918,266 0.9329 22,422,838 7 615 .006650544
A 21,815,274 0.9822 22,210,623 7 431 .033016407
A 21,944,965 1.0146 21,629,179 7 236 .011390938
D3 20,154,453 0.9905 20,347,757 10 1,477 .077889760
F1 8,149,437 0.9246 8,814,014 7 132 .038145348
F1 8,706,451 0.9190 9,473,831 6 38 .011312855
F1 8,370,762 0.9876 8,475,863 4 11 .006998072
F1 10,432,460 1.0287 10,141,402 2 4 .000057048
G1 49,448,529 1.0335 47,845,698 9 23 .044002761
G1 53,993,362 1.0393 51,951,662 5 7 .001865850
G1 47,975,729 1.1086 43,275,960 3 4 .003235561
Random Totals: 292,887,999   289,199,639 74 4,068  
Catg D1 Exception Values: 14,315,543   16,828,943      
Catg G1 Exception Values: 36,544,352   36,075,059      
Total Test Values (4): 343,747,894   342,103,641      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 17,105,182

Confidence Interval Values (5)

State Lower Limit: 324,998,459 (State Test Value minus Margin of Error Percent)
Local Test Value: 343,747,894 (Within Confidence Interval)
State Upper Limit: 359,208,823 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 387,354,473 (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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