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2008 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 1,329,760,482 0.9905 1,342,514,369 45 9,290 .004523922
A 1,457,265,738 0.9964 1,462,530,849 47 7,573 .005606225
A 1,481,899,936 0.9894 1,497,776,365 48 5,406 .003903825
A 1,506,676,522 0.9876 1,525,593,886 47 3,046 .005207375
B 76,615,602 0.7596 100,863,088 6 33 .005410796
B 42,821,407 0.8419 50,862,819 4 5 .030559499
D3 297,450,285 1.0090 294,797,111 45 2,777 .001157418
F1 249,164,474 1.0271 242,590,277 7 298 .016903649
F1 270,879,783 1.0170 266,351,802 7 118 .006345154
F1 281,199,516 0.9583 293,435,788 6 49 .006114098
F1 284,841,067 0.9989 285,154,737 5 17 .007974899
L1 183,749,939 0.9898 185,643,503 8 508 .003762951
L1 222,139,695 0.8390 264,767,217 6 43 .042482572
L1 214,231,837 0.9305 230,233,033 4 10 .013518546
Random Totals: 7,898,696,283   8,043,114,844 285 29,173  
Catg D1 Exception Values: 4,704,331   4,738,998      
Catg B Exception Values: 156,642,285   158,771,333      
Catg L1 Exception Values: 118,325,272   152,627,031      
Total Test Values (4): 8,178,368,171   8,359,252,206      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 417,962,610

Confidence Interval Values (5)

State Lower Limit: 7,941,289,596 (State Test Value minus Margin of Error Percent)
Local Test Value: 8,178,368,171 (Within Confidence Interval)
State Upper Limit: 8,777,214,816 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,925,287,139 (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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