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2009 Confidence Interval Detail
241/Wharton
241-906/Louise ISD

Category Summary

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

Stratum
Variance
A 10,257,677 1.0391 9,871,694 9 203 .036843504
A 11,095,040 1.0473 10,593,946 8 118 .031753125
A 10,769,529 0.9990 10,780,309 8 83 .002417751
A 12,295,291 1.0079 12,198,920 9 59 .002964116
D3 33,614,818 1.0057 33,424,299 20 2,341 .090422248
G1 3,162,470 0.8632 3,663,658 4 11 .060499313
G1 5,216,630 0.9955 5,240,211 3 5 .043073740
L1 2,765,589 0.9396 2,943,368 6 37 .109996172
L1 3,011,229 1.1369 2,648,631 4 9 .023364704
L1 2,670,620 1.0641 2,509,745 3 4 .011590887
Random Totals: 94,858,893   93,874,781 74 2,870  
Catg J Exception Values: 7,970,957   7,794,373      
Catg D1 Exception Values: 24,915,825   23,991,224      
Catg G1 Exception Values: 16,632,870   10,753,748      
Catg L1 Exception Values: 2,494,278   2,381,913      
Total Test Values (4): 146,872,823   138,796,039      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,939,802

Confidence Interval Values (5)

State Lower Limit: 131,856,237 (State Test Value minus Margin of Error Percent)
State Upper Limit: 145,735,841 (State Test Value plus Margin of Error Percent)
Local Test Value: 146,872,823 (Outside Confidence Interval)
Value Assigned (6): 168,535,213 (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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