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2009 Confidence Interval Detail
043/Collin
043-907/McKinney ISD

Category Summary

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

Stratum
Variance
A 1,500,427,939 1.0013 1,498,479,915 50 10,335 .004464064
A 1,351,724,135 0.9884 1,367,588,158 49 6,833 .004103594
A 1,517,276,200 1.0001 1,517,124,488 49 5,395 .004455305
A 1,393,727,341 0.9819 1,419,418,822 49 2,800 .003066874
B 100,047,549 0.7073 141,449,949 6 48 .025368474
B 110,196,243 0.8324 132,383,761 6 9 .021172221
B 119,687,130 0.8048 148,716,613 5 5 .025073700
D3 258,295,603 0.9136 282,722,858 10 2,699 .028860376
F1 267,237,924 0.9176 291,235,750 9 294 .019444710
F1 308,697,283 0.9401 328,366,432 10 126 .007204102
F1 293,965,159 0.9436 311,535,777 6 48 .012544661
F1 338,699,828 0.9067 373,552,253 5 17 .015024237
L1 218,282,451 0.9982 218,676,068 7 512 .000116978
L1 230,838,154 0.9809 235,333,015 6 33 .002604396
L1 356,931,893 0.9574 372,813,759 4 8 .001312798
Random Totals: 8,366,034,832   8,639,397,618 271 29,162  
Catg D1 Exception Values: 5,053,745   4,858,902      
Total Test Values (4): 8,371,088,577   8,644,256,520      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 432,212,826

Confidence Interval Values (5)

State Lower Limit: 8,212,043,694 (State Test Value minus Margin of Error Percent)
Local Test Value: 8,371,088,577 (Within Confidence Interval)
State Upper Limit: 9,076,469,346 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,925,923,714 (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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