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2009 Confidence Interval Detail
054/Crosby
054-903/Ralls ISD

Category Summary

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

Stratum
Variance
A 7,956,360 0.9879 8,053,811 13 321 .132542608
A 8,270,410 0.9537 8,671,920 11 171 .087466241
A 7,713,050 0.9217 8,368,287 11 102 .017465261
A 8,003,590 1.0345 7,736,675 10 57 .018842368
D3 8,486,620 1.0337 8,209,945 12 1,388 .003655259
G1 4,726,315 0.9837 4,804,630 8 21 .000342176
Random Totals: 45,156,345   45,845,268 65 2,060  
Catg D1 Exception Values: 28,622,570   32,991,025      
Catg G1 Exception Values: 20,952,654   22,448,221      
Total Test Values (4): 94,731,569   101,284,514      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 5,064,226

Confidence Interval Values (5)

Local Test Value: 94,731,569 (Outside Confidence Interval)
State Lower Limit: 96,220,288 (State Test Value minus Margin of Error Percent)
State Upper Limit: 106,348,740 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 100,804,273 (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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