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2007 Confidence Interval Detail
129/Kaufman
129-902/Forney ISD

Category Summary

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

Stratum
Variance
A 335,212,218 0.9595 349,361,353 61 2,468 .006868971
A 335,304,208 0.9703 345,567,565 67 1,950 .004861220
A 335,194,016 1.0046 333,659,184 65 1,557 .008294105
A 334,955,464 0.9981 335,593,091 59 1,125 .005897507
D3 111,349,944 1.0559 105,455,009 20 1,445 .013687634
F1 37,376,559 0.7328 51,005,130 9 162 .187325864
F1 37,961,419 0.8014 47,368,878 8 35 .125777220
F1 40,841,819 0.7933 51,483,448 5 13 .045053664
Random Totals: 1,568,195,647   1,619,493,658 294 8,755  
Catg D1 Exception Values: 4,521,470   3,104,439      
Catg F1 Exception Values: 23,928,750   28,060,286      
Total Test Values (4): 1,596,645,867   1,650,658,383      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 82,532,919

Confidence Interval Values (5)

State Lower Limit: 1,568,125,464 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,596,645,867 (Within Confidence Interval)
State Upper Limit: 1,733,191,302 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,197,244,001 (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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