taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
043/Collin
043-914/Wylie ISD

Category Summary

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

Stratum
Variance
A 678,433,596 0.9872 687,230,142 10 5,378 .001064163
A 587,986,758 0.9928 592,250,965 10 3,719 .005283033
A 636,492,005 0.9476 671,688,481 10 3,221 .007959519
A 666,484,065 0.9919 671,926,671 10 2,416 .006540444
F1 48,003,037 0.9252 51,883,957 11 98 .013367893
F1 52,172,513 0.9687 53,858,277 10 36 .005029967
F1 68,245,907 0.9325 73,185,959 8 17 .052946522
F1 39,103,271 0.9907 39,470,345 3 3 .000058181
Random Totals: 2,776,921,152   2,841,494,797 72 14,888  
Catg D1 Exception Values: 748,315   599,541      
Total Test Values (4): 2,777,669,467   2,842,094,338      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 142,104,717

Confidence Interval Values (5)

State Lower Limit: 2,699,989,621 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,777,669,467 (Within Confidence Interval)
State Upper Limit: 2,984,199,055 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,275,349,570 (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