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2009 Confidence Interval Detail
003/Angelina
003-907/Central ISD

Category Summary

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

Stratum
Variance
A 27,713,371 0.9478 29,239,682 15 636 .018291779
A 33,266,618 0.8985 37,024,617 17 424 .023629612
A 35,610,685 0.8290 42,956,194 16 329 .009419295
A 36,136,224 0.9260 39,024,000 16 233 .029085909
D3 52,100,233 0.9558 54,509,555 12 2,361 .046422795
G1 12,631,541 0.8733 14,464,149 10 21 .102065228
G1 11,435,322 1.0551 10,838,140 5 6 .004083580
G1 11,624,790 1.1545 10,069,112 3 4 .002579120
Random Totals: 220,518,784   238,125,449 94 4,014  
Catg J Exception Values: 12,499,070   11,206,255      
Catg D1 Exception Values: 7,185,295   6,948,571      
Catg G1 Exception Values: 11,519,080   10,781,244      
Total Test Values (4): 251,722,229   267,061,519      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,353,076

Confidence Interval Values (5)

Local Test Value: 251,722,229 (Outside Confidence Interval)
State Lower Limit: 253,708,443 (State Test Value minus Margin of Error Percent)
State Upper Limit: 280,414,595 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 266,331,660 (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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