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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 0.9729 78,768,537 14 3,812 .155757116
A 77,401,960 0.7169 107,967,583 15 2,146 .062103922
A 78,347,230 0.8341 93,930,260 15 1,266 .015155904
A 87,072,970 0.8853 98,354,196 15 691 .038336297
C 15,635,090 0.3572 43,771,249 8 3,305 .599885194
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 0.8691 32,810,160 9 308 .018229156
F1 32,454,400 0.8522 38,083,079 8 95 .020602815
F1 27,184,650 0.9397 28,929,073 7 28 .009418826
F1 27,071,890 0.9010 30,046,493 3 6 .003735174
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: 1,183,717,789   1,259,217,305 139 14,593  
Catg D1 Exception Values: 35,267,780   36,125,276      
Total Test Values (4): 1,218,985,569   1,295,342,581      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 64,767,129

Confidence Interval Values (5)

Local Test Value: 1,218,985,569 (Outside Confidence Interval)
State Lower Limit: 1,230,575,452 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,360,109,710 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,394,358,757 (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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