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2009 Confidence Interval Detail
043/Collin
043-919/Lovejoy ISD

Category Summary

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

Stratum
Variance
A 334,864,213 0.9606 348,599,014 45 1,369 .011044012
A 353,653,495 0.9689 365,005,155 32 1,066 .005886881
A 363,789,187 0.9938 366,058,751 38 807 .004797764
A 376,163,864 0.9746 385,967,437 21 521 .012214206
Random Totals: 1,428,470,759   1,465,630,357 136 3,763  
Catg D1 Exception Values: 281,810   252,448      
Total Test Values (4): 1,428,752,569   1,465,882,805      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 73,294,140

Confidence Interval Values (5)

State Lower Limit: 1,392,588,665 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,428,752,569 (Within Confidence Interval)
State Upper Limit: 1,539,176,945 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,473,904,129 (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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