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2008 Confidence Interval Detail
057/Dallas
057-906/DeSoto ISD

Category Summary

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

Stratum
Variance
A 482,747,170 0.9995 482,988,664 14 4,620 .005305990
A 541,511,110 0.9983 542,433,247 18 4,109 .000665107
A 462,479,030 0.9924 466,020,788 19 2,709 .000860338
A 369,570,660 0.9962 370,980,385 24 1,373 .007425459
B 31,371,490 1.0333 30,360,486 7 358 .003829233
B 31,039,960 0.9873 31,439,238 13 208 .000788044
B 33,060,380 1.0238 32,291,834 5 16 .006591097
F1 57,245,910 0.8856 64,640,820 7 169 .006201066
F1 54,659,760 0.8959 61,011,006 7 45 .018844315
F1 61,028,920 0.9577 63,724,465 6 20 .001620470
F1 62,896,830 0.9363 67,175,937 2 8 .001552403
Random Totals: 2,187,611,220   2,213,066,870 122 13,635  
Catg D1 Exception Values: 215,044   203,893      
Catg B Exception Values: 24,052,000   24,946,000      
Total Test Values (4): 2,211,878,264   2,238,216,763      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 111,910,838

Confidence Interval Values (5)

State Lower Limit: 2,126,305,925 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,211,878,264 (Within Confidence Interval)
State Upper Limit: 2,350,127,601 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,352,593,316 (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

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