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2009 Confidence Interval Detail
138/Knox
138-904/Benjamin ISD

Category Summary

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

Stratum
Variance
A 548,640 0.9666 567,598 16 50 .038766813
A 583,520 0.8930 653,438 15 31 .029638222
A 576,800 0.8748 659,351 14 22 .029038442
A 517,430 0.8385 617,090 8 11 .044501800
D3 1,705,650 1.0323 1,652,281 26 1,053 .035178232
G1 1,598,420 1.0343 1,545,412 12 17 .030497156
Random Totals: 5,530,460   5,695,170 91 1,184  
Catg J Exception Values: 1,185,653   1,496,744      
Catg D1 Exception Values: 15,775,140   17,391,397      
Catg G1 Exception Values: 965,252   940,053      
Total Test Values (4): 23,456,505   25,523,364      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,276,168

Confidence Interval Values (5)

Local Test Value: 23,456,505 (Outside Confidence Interval)
State Lower Limit: 24,247,196 (State Test Value minus Margin of Error Percent)
State Upper Limit: 26,799,532 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 29,210,598 (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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