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2009 Confidence Interval Detail
163/Medina
163-901/Devine ISD

Category Summary

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

Stratum
Variance
A 33,508,950 0.9045 37,046,932 7 748 .023332833
A 34,559,080 0.9778 35,343,710 10 447 .166547455
A 34,727,650 0.9209 37,710,555 7 295 .011214928
A 35,278,570 1.0721 32,906,044 7 180 .014067021
D3 76,930,809 0.9327 82,481,837 16 2,745 .051231753
F1 7,231,640 1.0257 7,050,444 7 99 .077691675
F1 8,035,670 0.8156 9,852,464 6 38 .048100343
F1 8,145,470 1.0921 7,458,539 5 17 .056550689
F1 4,887,870 0.9424 5,186,619 3 4 .041334388
Random Totals: 243,305,709   255,037,144 68 4,573  
Catg D1 Exception Values: 9,081,676   8,870,970      
Total Test Values (4): 252,387,385   263,908,114      

Margin of Error

Margin of Error Percent: 5.4937875
Margin of Error Value: 14,498,551

Confidence Interval Values (5)

State Lower Limit: 249,409,563 (State Test Value minus Margin of Error Percent)
Local Test Value: 252,387,385 (Within Confidence Interval)
State Upper Limit: 278,406,665 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 262,712,974 (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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