taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
043/Collin
043-918/Community ISD

Category Summary

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

Stratum
Variance
A 88,390,952 0.9854 89,700,580 10 1,002 .005000306
A 75,774,201 0.9476 79,964,332 10 517 .005631955
A 69,310,832 1.0120 68,488,964 10 388 .008776095
A 71,318,650 1.0254 69,552,028 10 300 .004434641
D3 107,157,418 0.8881 120,659,180 15 2,454 .056364579
Random Totals: 411,952,053   428,365,084 55 4,661  
Catg D1 Exception Values: 4,175,050   3,566,186      
Total Test Values (4): 416,127,103   431,931,270      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 21,596,564

Confidence Interval Values (5)

State Lower Limit: 410,334,706 (State Test Value minus Margin of Error Percent)
Local Test Value: 416,127,103 (Within Confidence Interval)
State Upper Limit: 453,527,834 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 459,377,149 (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