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2009 Confidence Interval Detail
018/Bosque
018-906/Iredell ISD

Category Summary

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

Stratum
Variance
A 2,494,400 0.9828 2,538,055 6 69 .004431700
A 2,967,500 0.9893 2,999,596 6 49 .004190569
A 2,312,240 0.9867 2,343,407 6 23 .006552632
A 3,128,870 0.9423 3,320,461 5 18 .002846497
D3 36,416,890 1.0206 35,681,844 23 1,203 .037097361
Random Totals: 47,319,900   46,883,363 46 1,362  
Catg J Exception Values: 1,369,138   1,342,664      
Catg D1 Exception Values: 6,152,130   5,435,467      
Total Test Values (4): 54,841,168   53,661,494      

Margin of Error

Margin of Error Percent: 5.3539862
Margin of Error Value: 2,873,029

Confidence Interval Values (5)

State Lower Limit: 50,788,465 (State Test Value minus Margin of Error Percent)
Local Test Value: 54,841,168 (Within Confidence Interval)
State Upper Limit: 56,534,523 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 54,221,044 (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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