taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
199/Rockwall
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 919,078,244 0.9649 952,511,394 99 6,373 .008777116
A 1,187,837,520 0.9641 1,232,068,790 99 5,906 .007724666
A 1,277,796,633 0.9705 1,316,637,437 100 4,488 .009172145
A 1,244,577,894 0.9895 1,257,784,633 100 2,375 .008036122
E 267,732,537 0.9551 280,318,854 15 958 .012715905
F1 222,876,814 0.9816 227,054,619 12 343 .031065532
F1 313,670,082 0.7795 402,399,079 10 145 .063830325
F1 264,044,287 0.8827 299,132,533 8 43 .014058406
F1 279,187,680 0.7941 351,577,484 5 12 .054280976
L1 72,207,620 1.1414 63,262,327 10 679 .014374481
L1 75,294,310 1.0917 68,969,781 9 152 .009485126
L1 68,936,080 1.1009 62,617,931 7 29 .002843707
L1 118,663,780 1.2934 91,745,616 3 7 .036376503
Random Totals: 6,311,903,481   6,606,080,478 477 21,510  
Catg D1 Exception Values: 2,475,540   1,788,738      
Total Test Values (4): 6,314,379,021   6,607,869,216      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 330,393,461

Confidence Interval Values (5)

State Lower Limit: 6,277,475,755 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,314,379,021 (Within Confidence Interval)
State Upper Limit: 6,938,262,677 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,699,592,662 (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