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2007 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 490,243,504 0.9861 497,153,944 22 4,463 .002078748
A 490,148,464 1.0016 489,365,479 20 3,588 .001922699
A 490,338,554 1.0008 489,946,597 24 2,795 .001076538
A 490,025,301 0.9949 492,537,241 22 1,799 .004962212
B 31,878,286 1.0617 30,025,700 7 372 .003695387
B 31,778,024 0.9167 34,665,675 9 208 .021660582
B 38,002,683 0.7268 52,287,676 5 18 .010434408
F1 51,166,466 0.8533 59,963,045 7 149 .009711203
F1 51,682,465 0.9013 57,342,134 7 43 .016620013
F1 48,943,726 0.8021 61,019,481 5 17 .036122753
F1 50,227,751 0.9834 51,075,606 3 6 .001135672
Random Totals: 2,264,435,224   2,315,382,578 131 13,458  
Catg D1 Exception Values: 227,938   220,143      
Catg B Exception Values: 25,719,520   28,416,000      
Total Test Values (4): 2,290,382,682   2,344,018,721      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 117,200,936

Confidence Interval Values (5)

State Lower Limit: 2,226,817,785 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,290,382,682 (Within Confidence Interval)
State Upper Limit: 2,461,219,657 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,357,468,357 (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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