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2011 Confidence Interval Detail
205/San Patricio
205-902/Gregory-Portland CISD

Category Summary

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

Stratum
Variance
A 214,036,050 0.9293 230,319,649 10 2,260 .028504934
A 174,854,283 1.0159 172,117,613 11 1,287 .004770763
A 120,186,685 0.9726 123,572,574 11 698 .009228793
A 134,307,581 1.0415 128,955,911 11 464 .041148094
F1 19,586,249 0.9004 21,752,831 11 98 .019243535
F1 24,336,277 1.0028 24,268,326 8 39 .006528436
F1 17,766,257 0.9153 19,410,310 7 12 .017455607
F1 18,003,402 1.0124 17,782,894 3 4 .039795586
Random Totals: 723,076,784   738,180,108 72 4,862  
Catg D1 Exception Values: 16,012,235   13,713,712      
Total Test Values (4): 739,089,019   751,893,820      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 37,594,691

Confidence Interval Values (5)

State Lower Limit: 714,299,129 (State Test Value minus Margin of Error Percent)
Local Test Value: 739,089,019 (Within Confidence Interval)
State Upper Limit: 789,488,511 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,118,066,506 (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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