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2007 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 2,327,191,566 0.9988 2,329,987,551 75 11,350 .001349583
A 2,325,930,122 1.0043 2,315,971,445 74 8,672 .001275457
A 2,326,835,003 0.9857 2,360,591,461 73 6,535 .000792825
A 2,326,199,189 0.9990 2,328,527,717 75 3,323 .002538492
B 165,896,680 0.9485 174,904,249 7 386 .019535368
B 173,616,619 0.7484 231,983,724 6 7 .038305563
B 188,003,234 0.7916 237,497,769 3 6 .019470453
B 136,026,723 0.8631 157,602,506 2 3 .010345853
D3 509,319,650 0.9891 514,932,413 10 1,144 .001295681
F1 583,944,856 0.8619 677,508,825 7 240 .038291391
F1 577,968,670 0.7011 824,374,084 6 60 .087826537
F1 616,138,056 0.8630 713,949,080 5 22 .013033325
F1 540,388,008 0.9196 587,633,763 3 5 .000477129
L1 145,683,028 0.9840 148,051,858 10 797 .001951520
L1 146,734,495 0.9862 148,787,766 13 117 .006069823
L1 145,327,578 1.0052 144,575,784 6 30 .001803487
Random Totals: 13,235,203,477   13,896,879,995 375 32,697  
Catg D1 Exception Values: 2,504,655   2,408,927      
Catg L1 Exception Values: 140,606,619   145,607,008      
Total Test Values (4): 13,378,314,751   14,044,895,930      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 702,244,797

Confidence Interval Values (5)

State Lower Limit: 13,342,651,133 (State Test Value minus Margin of Error Percent)
Local Test Value: 13,378,314,751 (Within Confidence Interval)
State Upper Limit: 14,747,140,727 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,838,064,635 (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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