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2010 Confidence Interval Detail
070/Ellis
070-903/Ennis ISD

Category Summary

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

Stratum
Variance
A 143,987,034 1.0172 141,552,334 28 2,433 .008754720
A 138,288,940 1.0154 136,191,590 18 1,407 .003569914
A 131,067,742 1.0124 129,462,408 15 917 .008501132
A 138,799,373 1.0169 136,492,647 10 579 .001504383
D3 141,283,658 0.9868 143,173,549 20 4,220 .016262722
F1 43,321,016 1.0263 42,210,870 10 244 .004523651
F1 49,957,880 0.9790 51,029,499 9 87 .027964025
F1 43,654,265 0.9729 44,870,249 8 23 .000215083
F1 36,136,490 1.0609 34,062,108 4 5 .025743678
L1 18,995,009 1.0267 18,501,031 10 244 .010236137
L1 20,535,750 1.0481 19,593,312 9 59 .012003552
L1 17,902,470 0.9974 17,949,138 7 15 .000209630
L1 23,263,560 1.0847 21,446,999 3 5 .002722531
Random Totals: 947,193,187   936,535,734 151 10,238  
Catg J Exception Values: 90,209,462   90,711,578      
Catg D1 Exception Values: 16,394,058   13,483,849      
Total Test Values (4): 1,053,796,707   1,040,731,161      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 52,036,558

Confidence Interval Values (5)

State Lower Limit: 988,694,603 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,053,796,707 (Within Confidence Interval)
State Upper Limit: 1,092,767,719 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,679,797,772 (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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