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2009 Confidence Interval Detail
140/Lamb
140-904/Littlefield ISD

Category Summary

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

Stratum
Variance
A 21,857,670 0.9996 21,866,417 15 1,030 .027097972
A 21,574,560 0.8981 24,022,447 14 400 .017637981
A 22,012,650 0.9871 22,300,324 14 245 .011890766
A 22,059,830 0.9789 22,535,325 14 154 .007646371
D3 9,290,525 0.9785 9,494,660 11 1,533 .002391924
F1 5,100,920 0.9055 5,633,263 7 166 .025943654
F1 5,418,740 0.9619 5,633,371 7 33 .006827378
F1 5,586,470 1.0058 5,554,255 4 10 .000876239
G1 7,641,060 0.9364 8,160,038 4 10 .000653882
L1 4,054,620 0.9517 4,260,397 6 66 .010571832
L1 3,890,970 0.9702 4,010,482 5 15 .001542834
L1 16,595,930 1.0036 16,536,399 5 9 .000556043
Random Totals: 145,083,945   150,007,378 106 3,671  
Catg J Exception Values: 10,326,710   9,758,868      
Catg D1 Exception Values: 35,135,432   28,807,434      
Catg F1 Exception Values: 4,939,280   4,738,280      
Catg G1 Exception Values: 14,236,500   14,026,404      
Total Test Values (4): 209,721,867   207,338,364      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,366,918

Confidence Interval Values (5)

State Lower Limit: 196,971,446 (State Test Value minus Margin of Error Percent)
Local Test Value: 209,721,867 (Within Confidence Interval)
State Upper Limit: 217,705,282 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 224,257,998 (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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