taxes Property Tax Assistance

2020 Confidence Interval Detail

Rockwall County
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 237,865,416 0.9784 243,116,738 52 1,377 0.005279524
A 379,920,858 1.0087 376,644,055 73 1,807 0.001831304
A 456,721,898 1.0025 455,582,941 70 1,828 0.006655317
A 431,720,011 1.0031 430,385,815 72 1,160 0.006463876
E 104,959,938 0.8882 118,171,513 10 500 0.026568045
F1 35,562,831 0.9366 37,970,138 10 113 0.015458313
F1 40,271,933 1.0074 39,976,110 9 40 0.024149972
F1 30,243,474 1.0845 27,887,021 6 14 0.047887813
F1 29,168,343 0.3342 87,278,106 4 6 1.331808430
Random Totals: 1,746,434,702 1,817,012,437 306 6,845
CATG D1 EXCEPTION VALUES: 1,546,296 1,404,243
Total Test Values 1,747,980,998 1,818,416,680

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 90,920,834

Confidence Interval Values(5)

Local Test Value: 1,747,980,998 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 1,727,495,846 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,909,337,514 (State Test Value plus Margin of Error Percent)

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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values