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2006 Confidence Interval Detail
070/Ellis
070-908/Midlothian ISD

Category Summary

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

Stratum
Variance
A 316,756,585 0.9739 325,245,492 53 2,527 .001624928
A 319,161,987 0.9799 325,708,733 58 1,819 .002669872
A 314,081,324 0.9703 323,695,068 51 1,319 .003221485
A 316,559,515 0.9978 317,257,481 49 857 .002122350
D3 94,200,954 1.1758 80,116,477 10 2,232 .098559263
Random Totals: 1,360,760,365   1,372,023,251 221 8,754  
Catg D1 Exception Values: 4,904,360   4,225,761      
Total Test Values (4): 1,365,664,725   1,376,249,012      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 68,812,451

Confidence Interval Values (5)

State Lower Limit: 1,307,436,561 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,365,664,725 (Within Confidence Interval)
State Upper Limit: 1,445,061,463 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,291,486,444 (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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