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2007 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 1,365,325,970 0.9956 1,371,359,954 49 8,983 .003169549
A 1,364,109,142 0.9923 1,374,694,288 50 6,737 .002579098
A 1,364,481,385 0.9792 1,393,465,467 49 4,750 .005243365
A 1,364,242,883 0.9873 1,381,791,637 50 2,648 .002213906
B 82,998,929 0.7205 115,196,293 7 41 .039953193
B 74,946,453 0.7853 95,436,716 4 7 .017936805
B 85,166,452 0.8352 101,971,327 3 4 .024459947
F1 250,210,575 0.9398 266,238,109 6 288 .016294464
F1 250,001,045 0.8989 278,118,862 6 97 .016388940
F1 254,854,120 0.8903 286,256,453 6 39 .018713449
F1 241,216,099 0.9585 251,659,989 4 12 .002523867
L1 187,572,929 0.9888 189,697,541 9 535 .000263923
L1 187,487,806 0.9536 196,610,535 6 31 .007504892
L1 218,053,850 0.9559 228,113,663 4 8 .002315909
Random Totals: 7,290,667,638   7,530,610,834 253 24,180  
Catg D1 Exception Values: 4,811,729   4,529,679      
Catg B Exception Values: 81,081,824   101,660,224      
Catg L1 Exception Values: 85,484,561   56,931,092      
Total Test Values (4): 7,462,045,752   7,693,731,829      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 384,686,591

Confidence Interval Values (5)

State Lower Limit: 7,309,045,238 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,462,045,752 (Within Confidence Interval)
State Upper Limit: 8,078,418,420 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,349,721,097 (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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