Holiday Hours
Quick Start for:

2008 Confidence Interval Detail
057/Dallas
057-907/Duncanville ISD

Category Summary

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

Stratum
Variance
A 553,364,810 1.0438 530,144,482 22 6,043 .011939774
A 501,306,830 0.9895 506,626,407 23 4,174 .002457894
A 531,707,310 1.0151 523,797,961 23 3,422 .003736970
A 546,218,350 0.9933 549,902,698 31 2,149 .001377458
B 43,978,060 1.0262 42,855,252 7 218 .002032286
B 44,712,830 0.7379 60,594,701 5 9 .045254173
B 47,122,630 1.0122 46,554,663 4 7 .002523984
B 48,419,880 0.9211 52,567,452 3 6 .005244085
F1 140,556,720 0.9401 149,512,520 7 387 .007909352
F1 146,807,950 0.9091 161,487,130 7 135 .018960228
F1 152,065,040 0.9448 160,949,450 6 57 .033756609
F1 159,198,420 0.9742 163,414,514 5 22 .010181893
L1 65,888,020 1.0347 63,678,380 7 406 .017445177
L1 76,242,180 1.0193 74,798,568 6 65 .013338789
L1 51,343,180 1.0323 49,736,685 5 13 .029483427
L1 55,261,150 1.0171 54,332,072 3 6 .000338074
Random Totals: 3,164,193,360   3,190,952,935 164 17,119  
Catg D1 Exception Values: 103,338   111,374      
Total Test Values (4): 3,164,296,698   3,191,064,309      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 159,553,215

Confidence Interval Values (5)

State Lower Limit: 3,031,511,094 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,164,296,698 (Within Confidence Interval)
State Upper Limit: 3,350,617,524 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,457,994,567 (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

Required Plug-ins