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2007 Confidence Interval Detail
034/Cass
034-908/Marietta CISD

Category Summary

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

Stratum
Variance
A 1,761,100 0.9987 1,763,392 7 52 .007965554
A 1,752,614 0.9672 1,812,049 6 30 .001822615
A 1,675,977 0.8867 1,890,129 6 23 .017896065
A 1,718,290 1.1716 1,466,618 6 15 .003380918
D3 8,835,460 1.0252 8,618,279 24 649 .013060633
Random Totals: 15,743,441   15,550,467 49 769  
Catg J Exception Values: 1,789,890   1,956,740      
Catg D1 Exception Values: 1,858,000   1,915,268      
Total Test Values (4): 19,391,331   19,422,475      

Margin of Error

Margin of Error Percent: 5.0000013
Margin of Error Value: 971,124

Confidence Interval Values (5)

State Lower Limit: 18,451,351 (State Test Value minus Margin of Error Percent)
Local Test Value: 19,391,331 (Within Confidence Interval)
State Upper Limit: 20,393,599 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 15,865,619 (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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