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2009 Confidence Interval Detail
043/Collin
043-905/Frisco ISD

Category Summary

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

Stratum
Variance
A 1,830,521,025 0.9974 1,835,292,786 50 10,903 .003089516
A 1,756,126,080 0.9828 1,786,860,073 49 8,055 .004279182
A 1,787,848,644 1.0073 1,774,891,933 50 6,141 .002545908
A 1,716,985,617 0.9920 1,730,832,275 45 2,532 .004681149
B 187,658,789 0.9976 188,110,254 12 348 .004239235
B 249,422,528 0.8575 290,871,753 4 12 .001841034
B 379,657,150 0.8310 456,867,810 3 13 .008561455
B 87,026,492 0.8490 102,504,702 2 2 .002612211
D3 272,994,531 0.9282 294,111,755 10 694 .051194232
F1 771,952,373 0.8138 948,577,504 9 318 .106606228
F1 658,479,527 0.8781 749,891,273 6 67 .008641550
F1 706,739,947 0.9048 781,100,737 8 29 .009450796
F1 632,504,856 0.9162 690,356,752 6 8 .002499342
L1 166,973,824 1.0066 165,879,022 7 844 .001101441
L1 159,293,626 0.9995 159,373,313 7 115 .000255906
L1 133,890,751 0.9842 136,040,186 6 24 .000883656
L1 215,548,100 1.0034 214,817,720 3 8 .001738240
Random Totals: 11,713,623,860   12,306,379,848 277 30,113  
Catg D1 Exception Values: 1,750,417   1,771,640      
Total Test Values (4): 11,715,374,277   12,308,151,488      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 615,407,574

Confidence Interval Values (5)

State Lower Limit: 11,692,743,914 (State Test Value minus Margin of Error Percent)
Local Test Value: 11,715,374,277 (Within Confidence Interval)
State Upper Limit: 12,923,559,062 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 11,679,348,785 (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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