taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
043/Collin
043-908/Melissa ISD

Category Summary

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

Stratum
Variance
A 88,798,890 0.9742 91,150,575 10 771 .004815161
A 80,355,659 0.9961 80,670,273 10 458 .007499983
A 81,360,830 1.0131 80,308,785 10 344 .000827408
A 80,090,463 1.0437 76,737,054 10 227 .006104793
D3 39,531,326 0.9655 40,943,890 15 1,014 .018395029
Random Totals: 370,137,168   369,810,577 55 2,814  
Catg D1 Exception Values: 1,783,509   1,427,034      
Total Test Values (4): 371,920,677   371,237,611      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 18,561,881

Confidence Interval Values (5)

State Lower Limit: 352,675,730 (State Test Value minus Margin of Error Percent)
Local Test Value: 371,920,677 (Within Confidence Interval)
State Upper Limit: 389,799,492 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 437,236,098 (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