taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
057/Dallas
057-916/Richardson ISD

Category Summary

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

Stratum
Variance
A 2,345,097,670 0.9450 2,481,584,836 10 17,696 .002277816
A 2,367,489,990 0.9690 2,443,230,124 10 12,362 .002262411
A 2,353,739,240 0.9971 2,360,584,936 10 9,036 .006291977
A 2,337,134,590 1.0034 2,329,215,258 10 5,707 .006730357
B 280,465,780 0.8986 312,114,155 20 587 .156995212
B 287,044,480 0.7679 373,804,506 9 57 .028319690
B 236,444,920 0.9676 244,362,257 7 21 .015152971
B 476,021,770 0.9383 507,323,638 5 18 .004067448
F1 987,787,470 0.9549 1,034,440,748 21 847 .009453059
F1 970,553,800 0.8845 1,097,290,899 11 245 .054485033
F1 950,001,370 0.9358 1,015,175,647 9 89 .006334551
F1 1,055,391,520 0.8044 1,312,023,272 7 22 .041486895
L1 353,833,180 1.0610 333,490,273 10 2,060 .029745680
L1 325,628,180 1.0296 316,266,686 10 292 .002208587
L1 394,230,780 1.1479 343,436,519 9 100 .052798045
L1 320,089,650 1.0149 315,390,334 6 16 .000413521
Random Totals: 16,040,954,390   16,819,734,088 164 49,155  
Catg J Exception Values: 105,846,580   108,025,668      
Catg D1 Exception Values: 9,321   9,650      
Total Test Values (4): 16,146,810,291   16,927,769,406      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 846,388,470

Confidence Interval Values (5)

State Lower Limit: 16,081,380,936 (State Test Value minus Margin of Error Percent)
Local Test Value: 16,146,810,291 (Within Confidence Interval)
State Upper Limit: 17,774,157,876 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 16,283,156,890 (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