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2008 Confidence Interval Detail
063/Dickens
063-903/Spur ISD

Category Summary

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

Stratum
Variance
A 3,181,040 0.8452 3,763,654 15 308 .119989323
A 3,134,820 0.7180 4,366,045 9 158 .339875291
A 3,252,240 0.7042 4,618,347 7 98 .068228683
A 3,249,800 0.7007 4,637,933 8 59 .038367387
D3 13,065,340 0.8381 15,589,238 23 2,349 .114780232
G1 51,774,943 1.0052 51,507,106 8 49 .028661894
G1 50,873,428 1.0276 49,507,034 5 11 .003235956
G1 53,108,699 1.0080 52,687,201 3 5 .000009739
Random Totals: 181,640,310   186,676,558 78 3,037  
Catg D1 Exception Values: 22,113,360   20,514,659      
Catg G1 Exception Values: 45,784,981   42,563,590      
Total Test Values (4): 249,538,651   249,754,807      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,487,740

Confidence Interval Values (5)

State Lower Limit: 237,267,067 (State Test Value minus Margin of Error Percent)
Local Test Value: 249,538,651 (Within Confidence Interval)
State Upper Limit: 262,242,547 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 315,413,216 (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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