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2012 Confidence Interval Detail
178/Nueces
178-909/Robstown ISD

Category Summary

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

Stratum
Variance
A 63,461,717 0.9943 63,825,522 10 1,878 .007126189
A 38,048,203 0.9334 40,763,020 10 707 .024114508
A 33,546,234 0.9572 35,046,212 10 418 .009475311
A 58,197,070 0.9870 58,963,597 10 410 .008840263
F1 11,904,878 0.9244 12,878,492 9 169 .009101248
F1 13,906,304 0.9705 14,329,010 8 62 .015541439
F1 11,715,657 0.9886 11,850,756 7 21 .010935913
F1 18,213,153 0.9999 18,214,974 5 15 .000685908
L1 13,463,232 1.0114 13,311,481 9 115 .021824019
L1 12,793,337 0.8588 14,896,759 6 18 .008488831
L1 19,089,867 1.0234 18,653,378 4 8 .000737797
Random Totals: 294,339,652   302,733,201 88 3,821  
Catg J Exception Values: 7,658,160   7,393,690      
Catg D1 Exception Values: 15,515,959   17,705,793      
Catg L1 Exception Values: 71,732,637   70,221,854      
Total Test Values (4): 389,246,408   398,054,538      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 19,902,727

Confidence Interval Values (5)

State Lower Limit: 378,151,811 (State Test Value minus Margin of Error Percent)
Local Test Value: 389,246,408 (Within Confidence Interval)
State Upper Limit: 417,957,265 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 415,480,750 (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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