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2009 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 170,790,050 0.9605 177,813,691 15 1,830 .005481606
A 164,111,842 1.0047 163,344,125 34 1,251 .007952677
A 171,395,004 1.0352 165,567,044 31 1,008 .004368703
A 177,269,012 0.9922 178,662,580 36 621 .002308927
B 50,824,674 1.0104 50,301,538 7 49 .001963525
F1 20,042,624 1.0166 19,715,349 7 101 .004947959
F1 18,060,965 0.9842 18,350,909 7 33 .002161883
F1 19,936,727 0.9399 21,211,541 5 16 .021744359
F1 22,076,946 1.0150 21,750,686 3 5 .008323071
G1 22,145,950 0.9042 24,492,314 6 43 .096182390
Random Totals: 836,653,794   841,209,777 151 4,957  
Catg D1 Exception Values: 16,155,342   19,658,668      
Catg G1 Exception Values: 29,072,630   28,254,913      
Total Test Values (4): 881,881,766   889,123,358      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 44,456,168

Confidence Interval Values (5)

State Lower Limit: 844,667,190 (State Test Value minus Margin of Error Percent)
Local Test Value: 881,881,766 (Within Confidence Interval)
State Upper Limit: 933,579,526 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,112,566,203 (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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