taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 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 337,623,437 0.9853 342,660,547 10 1,968 .004569698
A 391,512,538 1.0110 387,252,758 10 1,421 .004815837
A 365,427,940 0.9925 368,189,360 10 937 .001039850
A 325,342,679 1.0471 310,708,317 11 514 .004027162
D3 107,773,532 0.8364 128,854,055 15 915 .018981086
F1 26,141,140 0.9462 27,627,499 9 108 .028413697
F1 30,199,974 0.9843 30,681,676 9 22 .000990394
F1 23,028,631 0.9790 23,522,606 7 9 .009032067
Random Totals: 1,607,049,871   1,619,496,818 81 5,894  
Catg D1 Exception Values: 3,201,243   2,821,494      
Catg F1 Exception Values: 17,740,013   18,112,582      
Total Test Values (4): 1,627,991,127   1,640,430,894      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 82,021,545

Confidence Interval Values (5)

State Lower Limit: 1,558,409,349 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,627,991,127 (Within Confidence Interval)
State Upper Limit: 1,722,452,439 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,015,307,721 (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