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2009 Confidence Interval Detail
157/Mason
157-901/Mason ISD

Category Summary

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

Stratum
Variance
A 18,252,640 1.0403 17,545,554 13 313 .025382714
A 21,374,940 0.9740 21,945,524 13 242 .023706316
A 24,524,250 0.8137 30,139,179 13 197 .042196294
A 27,236,280 0.9511 28,636,610 12 122 .003249938
D3 111,378,640 0.9079 122,677,211 27 8,235 .047644632
F1 5,804,060 0.9495 6,112,754 7 91 .016232744
F1 5,782,540 1.0349 5,587,535 6 37 .018948728
F1 6,973,530 1.0061 6,931,249 5 25 .021122683
F1 4,710,000 0.9813 4,799,755 4 8 .004849910
Random Totals: 226,036,880   244,375,371 100 9,270  
Catg J Exception Values: 4,922,402   4,388,009      
Catg D1 Exception Values: 32,918,100   31,629,844      
Total Test Values (4): 263,877,382   280,393,224      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 14,019,661

Confidence Interval Values (5)

Local Test Value: 263,877,382 (Outside Confidence Interval)
State Lower Limit: 266,373,563 (State Test Value minus Margin of Error Percent)
State Upper Limit: 294,412,885 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 247,655,874 (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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