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2008 Confidence Interval Detail
043/Collin
043-903/Celina ISD

Category Summary

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

Stratum
Variance
A 70,868,919 0.9789 72,396,485 24 626 .004774712
A 85,198,823 0.9995 85,241,444 23 499 .006372365
A 85,088,191 0.9857 86,322,604 25 322 .002884340
A 90,515,523 1.0033 90,217,804 11 199 .005078634
D3 183,144,481 1.0027 182,651,322 67 2,922 .031339168
F1 7,298,171 0.9342 7,812,215 9 34 .029929108
F1 9,654,676 1.0245 9,423,793 6 11 .007872056
F1 9,072,049 1.0098 8,984,006 3 3 .001060082
Random Totals: 540,840,833   543,049,673 168 4,616  
Catg D1 Exception Values: 5,953,342   5,856,496      
Catg F1 Exception Values: 10,401,075   9,766,145      
Total Test Values (4): 557,195,250   558,672,314      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 27,933,616

Confidence Interval Values (5)

State Lower Limit: 530,738,698 (State Test Value minus Margin of Error Percent)
Local Test Value: 557,195,250 (Within Confidence Interval)
State Upper Limit: 586,605,930 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 630,797,021 (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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