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2009 Confidence Interval Detail
043/Collin
043-902/Anna ISD

Category Summary

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

Stratum
Variance
A 120,386,275 0.9740 123,599,872 37 1,202 .007471276
A 84,425,449 0.9982 84,577,689 21 679 .003102361
A 81,654,825 1.0128 80,622,852 20 557 .007821641
A 73,722,177 1.0168 72,504,108 14 364 .010244445
D3 81,347,264 0.9425 86,310,094 20 1,811 .013555866
F1 8,386,531 0.8958 9,362,057 6 28 .097018329
F1 5,781,487 1.0042 5,757,306 3 4 .002991202
F1 10,889,968 0.9982 10,909,605 2 5 .000587563
Random Totals: 466,593,976   473,643,583 123 4,650  
Catg D1 Exception Values: 4,045,907   3,823,146      
Catg F1 Exception Values: 11,768,890   12,150,890      
Total Test Values (4): 482,408,773   489,617,619      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 24,480,881

Confidence Interval Values (5)

State Lower Limit: 465,136,738 (State Test Value minus Margin of Error Percent)
Local Test Value: 482,408,773 (Within Confidence Interval)
State Upper Limit: 514,098,500 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 517,384,319 (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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