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2008 Confidence Interval Detail
043/Collin
043-904/Farmersville ISD

Category Summary

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

Stratum
Variance
A 35,508,194 0.9740 36,456,051 18 629 .005403739
A 37,836,790 0.9792 38,640,513 24 422 .012972664
A 36,893,059 0.9942 37,108,287 18 292 .001879016
A 45,590,673 0.9976 45,700,354 20 228 .002428014
C 4,457,091 1.0431 4,272,928 15 258 .024213966
C 3,012,091 1.0068 2,991,747 17 103 .003508377
C 3,273,276 1.0132 3,230,632 17 69 .000862048
C 4,548,511 1.0091 4,507,493 15 37 .001521380
D3 97,054,577 1.0407 93,258,938 42 2,771 .031490103
F1 4,518,619 0.9991 4,522,689 17 42 .009599421
F1 4,628,805 1.0332 4,480,067 15 21 .002488913
Random Totals: 277,321,686   275,169,699 218 4,872  
Catg D1 Exception Values: 3,930,946   3,712,730      
Catg F1 Exception Values: 11,683,953   11,428,804      
Total Test Values (4): 292,936,585   290,311,233      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 14,515,562

Confidence Interval Values (5)

State Lower Limit: 275,795,671 (State Test Value minus Margin of Error Percent)
Local Test Value: 292,936,585 (Within Confidence Interval)
State Upper Limit: 304,826,795 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 316,968,343 (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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