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2010 Confidence Interval Detail
043/Collin
043-912/Prosper ISD

Category Summary

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

Stratum
Variance
A 297,618,856 0.9838 302,519,675 25 1,721 .001775067
A 318,200,552 0.9889 321,772,224 25 1,099 .005225948
A 286,323,885 1.0082 283,995,125 24 670 .003649804
A 251,837,998 1.0108 249,147,208 24 362 .005012685
D3 109,233,461 0.9799 111,474,090 17 917 .001204673
F1 27,449,257 1.0904 25,173,567 10 105 .035836449
F1 24,629,817 0.9905 24,866,044 6 16 .001453485
F1 14,619,474 0.9732 15,022,065 4 5 .002590148
Random Totals: 1,329,913,300   1,333,969,998 135 4,895  
Catg J Exception Values: 23,705,934   25,885,007      
Catg D1 Exception Values: 3,071,207   3,169,316      
Catg F1 Exception Values: 18,198,650   18,518,453      
Total Test Values (4): 1,374,889,091   1,381,542,774      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 69,077,139

Confidence Interval Values (5)

State Lower Limit: 1,312,465,635 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,374,889,091 (Within Confidence Interval)
State Upper Limit: 1,450,619,913 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,709,834,491 (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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