taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
199/Rockwall
199-902/Royse City ISD

Category Summary

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

Stratum
Variance
A 122,407,025 0.9688 126,349,117 49 1,170 .014523417
A 171,413,491 0.9804 174,840,362 49 1,264 .003778835
A 177,619,495 0.9724 182,660,937 50 1,088 .006666275
A 216,074,111 0.9652 223,864,599 50 900 .011179065
E 69,370,291 1.0534 65,853,703 10 430 .159981769
F1 14,633,948 0.8857 16,522,466 10 78 .009026456
F1 16,504,470 0.8684 19,005,608 8 33 .014932807
F1 10,376,090 0.7818 13,272,052 6 11 .049110924
F1 27,228,832 0.9122 29,849,629 4 11 .003990018
Random Totals: 825,627,753   852,218,473 236 4,985  
Catg D1 Exception Values: 1,885,514   1,701,402      
Total Test Values (4): 827,513,267   853,919,875      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 42,695,994

Confidence Interval Values (5)

State Lower Limit: 811,223,881 (State Test Value minus Margin of Error Percent)
Local Test Value: 827,513,267 (Within Confidence Interval)
State Upper Limit: 896,615,869 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 879,617,071 (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