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2008 Confidence Interval Detail
091/Grayson
091-917/Gunter ISD

Category Summary

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

Stratum
Variance
A 22,385,014 1.0517 21,284,600 7 271 .011568824
A 31,846,930 0.9950 32,006,965 7 181 .021200827
A 29,402,094 0.9851 29,846,811 7 111 .069496805
A 25,767,311 1.0325 24,956,233 6 66 .016475196
C 1,036,431 0.8109 1,278,124 8 74 .112817109
C 3,465,132 1.0382 3,337,634 14 118 .004617008
C 4,666,471 0.9255 5,042,108 7 97 .013125079
C 12,798,612 0.9883 12,950,129 9 126 .191197020
D3 43,329,725 0.9238 46,903,794 13 1,122 .093481569
Random Totals: 174,697,720   177,606,398 78 2,166  
Catg D1 Exception Values: 5,405,662   4,091,642      
Total Test Values (4): 180,103,382   181,698,040      

Margin of Error

Margin of Error Percent: 6.2660335
Margin of Error Value: 11,385,260

Confidence Interval Values (5)

State Lower Limit: 170,312,780 (State Test Value minus Margin of Error Percent)
Local Test Value: 180,103,382 (Within Confidence Interval)
State Upper Limit: 193,083,300 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 200,899,941 (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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