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2006 Confidence Interval Detail
187/Polk
187-907/Livingston ISD

Category Summary

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

Stratum
Variance
A 131,802,983 1.1031 119,484,166 14 3,597 .088450063
A 131,880,090 1.0120 130,316,294 16 1,666 .038869767
A 131,827,329 1.0262 128,461,634 11 1,019 .017987622
A 131,701,487 1.0724 122,810,040 11 566 .008179581
C 17,051,529 1.3191 12,926,639 41 12,131 .198971459
C 16,980,913 1.0502 16,169,218 22 4,071 .033558967
C 17,026,904 1.0082 16,888,419 13 1,565 .000983621
C 17,004,745 0.9870 17,228,718 13 479 .001837139
D3 76,736,210 1.0093 76,029,139 30 4,223 .000752030
F1 28,894,489 0.9337 30,946,224 15 306 .021867404
F1 29,228,063 0.9067 32,235,649 11 96 .020923349
F1 29,025,166 0.9116 31,839,805 9 31 .016983717
F1 28,243,993 0.9994 28,260,950 5 7 .004862771
L1 14,462,271 1.0081 14,346,068 7 507 .001811756
L1 14,459,267 1.0528 13,734,106 7 77 .002187133
L1 18,409,481 1.0382 17,732,114 4 12 .002486017
Random Totals: 834,734,920   809,409,183 229 30,353  
Catg D1 Exception Values: 30,809,666   29,291,317      
Catg L1 Exception Values: 8,560,287   8,038,181      
Total Test Values (4): 874,104,873   846,738,681      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 42,336,934

Confidence Interval Values (5)

State Lower Limit: 804,401,747 (State Test Value minus Margin of Error Percent)
Local Test Value: 874,104,873 (Within Confidence Interval)
State Upper Limit: 889,075,615 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 886,299,513 (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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