taxes Property Tax Assistance

2020 Confidence Interval Detail

Rockwall County
199-901/Rockwall ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,935,276,073 0.9835 1,967,743,846 148 8,380 0.005139738
A 2,122,232,472 0.9961 2,130,541,584 148 7,018 0.008708094
A 2,199,448,984 0.9889 2,224,136,904 150 5,432 0.006147262
A 2,275,595,702 0.9819 2,317,543,235 150 3,370 0.008710499
C1 64,734,793 0.9939 65,132,099 26 861 0.018971974
C1 66,175,603 0.8952 73,922,702 13 321 0.028509403
C1 82,396,891 0.9342 88,200,483 9 120 0.043495398
C1 77,980,942 1.0072 77,423,493 8 32 0.038062349
E 341,216,461 1.0242 333,154,131 13 901 0.017890658
F1 383,199,664 0.9142 419,163,929 10 418 0.032040745
F1 382,659,933 0.8697 439,990,724 10 130 0.062606260
F1 358,139,186 0.8995 398,153,625 9 47 0.042851933
F1 428,949,769 0.8575 500,232,967 6 17 0.013002077
L1 99,606,141 1.1207 88,878,505 13 609 0.012600654
L1 99,211,119 1.0151 97,735,316 12 108 0.004711921
L1 105,315,580 0.9619 109,487,036 9 26 0.004592190
L1 146,098,260 0.8974 162,801,716 4 7 0.057916097
Random Totals: 11,168,237,573 11,494,242,295 738 27,797
CATG D1 EXCEPTION VALUES: 1,569,610 1,327,711
Total Test Values 11,169,807,183 11,495,570,006

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 574,778,500

Confidence Interval Values(5)

Local Test Value: 11,169,807,183 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 10,920,791,506 (State Test Value minus Margin of Error Percent)
State Upper Limit: 12,070,348,506 (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