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2009 Confidence Interval Detail
214/Starr
214-901/Rio Grande City ISD

Category Summary

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

Stratum
Variance
A 76,633,910 1.0805 70,924,489 14 3,812 .037948806
A 77,401,960 0.8396 92,189,090 13 2,146 .064670439
A 78,347,230 0.9637 81,298,360 15 1,266 .014810964
A 87,072,970 0.9618 90,531,264 15 691 .035482303
C 15,195,340 1.2165 12,491,032 7 1,641 .044445742
C 14,983,320 0.9021 16,609,378 8 791 .061071934
C 13,690,710 1.2119 11,296,897 7 171 .393564860
F1 28,515,310 0.9241 30,857,386 9 308 .018524423
F1 32,454,400 0.8628 37,615,206 8 95 .021740676
F1 27,184,650 0.9521 28,552,305 7 28 .007442061
F1 27,071,890 0.9075 29,831,284 3 6 .003351778
G1 173,650,798 1.1049 157,164,266 7 221 .063309913
G1 172,569,438 1.0100 170,860,830 6 69 .029037637
G1 178,123,328 1.0269 173,457,326 6 31 .015280727
G1 165,187,445 1.0031 164,676,946 4 12 .003326857
Random Totals: 1,168,082,699   1,168,356,059 129 11,288  
Catg D1 Exception Values: 35,267,780   36,125,276      
Catg C Exception Values: 17,190   22,500      
Total Test Values (4): 1,203,367,669   1,204,503,835      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 60,225,192

Confidence Interval Values (5)

State Lower Limit: 1,144,278,643 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,203,367,669 (Within Confidence Interval)
State Upper Limit: 1,264,729,027 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,327,619,842 (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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