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2010 Confidence Interval Detail
091/Grayson
091-909/Whitesboro ISD

Category Summary

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

Stratum
Variance
A 51,723,590 0.9844 52,543,265 15 1,258 .004111490
A 52,799,536 0.9597 55,016,709 16 679 .026566986
A 54,480,453 0.9637 56,532,586 16 469 .008643254
A 61,206,333 0.9723 62,950,049 17 319 .008010153
C 11,724,953 0.9700 12,087,580 43 722 .060978637
C 2,459,846 0.9753 2,522,143 15 52 .047646833
C 5,058,260 1.0723 4,717,206 14 79 .047255729
C 7,559,906 1.0858 6,962,522 11 57 .012256261
D3 116,672,570 1.0185 114,553,333 20 2,935 .009250608
F1 14,021,806 1.0792 12,992,778 9 99 .017963784
F1 15,268,662 0.9557 15,976,417 7 30 .004024042
F1 11,426,597 0.9661 11,827,551 5 10 .005444697
F1 8,606,697 0.9907 8,687,491 2 3 .001572068
G1 5,770,735 1.1164 5,169,057 9 38 .036581342
G1 5,662,490 0.9776 5,792,236 5 16 .005615603
G1 5,526,525 1.0574 5,226,523 5 9 .026013771
G1 5,575,918 1.0318 5,404,069 3 4 .006085224
Random Totals: 435,544,877   438,961,515 212 6,779  
Catg J Exception Values: 6,679,249   6,408,183      
Catg D1 Exception Values: 5,586,251   4,010,510      
Catg G1 Exception Values: 6,505,866   6,485,867      
Total Test Values (4): 454,316,243   455,866,075      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 22,793,304

Confidence Interval Values (5)

State Lower Limit: 433,072,771 (State Test Value minus Margin of Error Percent)
Local Test Value: 454,316,243 (Within Confidence Interval)
State Upper Limit: 478,659,379 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 439,713,481 (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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