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2007 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 307,829,516 0.9898 311,001,734 25 1,186 .005829140
A 307,792,828 0.9788 314,459,367 24 877 .001491783
A 307,640,282 0.9885 311,219,304 25 653 .002059101
A 307,735,203 0.9855 312,263,017 24 428 .002252769
Random Totals: 1,230,997,829   1,248,943,422 98 3,144  
Catg D1 Exception Values: 299,193   269,330      
Total Test Values (4): 1,231,297,022   1,249,212,752      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 62,460,638

Confidence Interval Values (5)

State Lower Limit: 1,186,752,114 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,231,297,022 (Within Confidence Interval)
State Upper Limit: 1,311,673,390 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,319,661,918 (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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