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2008 Confidence Interval Detail
031/Cameron
031-905/La Feria ISD

Category Summary

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

Stratum
Variance
A 51,887,834 1.0372 50,026,836 43 1,756 .065046297
A 52,461,272 1.0490 50,010,745 15 846 .028081070
A 54,721,099 1.0320 53,024,321 22 563 .040813935
A 57,355,827 0.8935 64,192,308 14 347 .023953395
C 8,095,209 0.9848 8,220,155 7 812 .010236856
C 5,868,422 0.9284 6,321,006 11 285 .036765065
C 5,584,078 1.0205 5,471,904 8 176 .015093294
C 5,131,267 0.9556 5,369,681 7 71 .022035455
D3 40,663,250 0.9118 44,596,677 31 1,816 .075061202
F1 7,930,935 0.9435 8,405,866 8 112 .019090046
F1 8,116,548 0.9348 8,682,657 6 44 .004488269
F1 9,234,584 0.9930 9,299,682 5 23 .014137513
F1 7,912,291 0.8790 9,001,469 4 9 .002778235
Random Totals: 314,962,616   322,623,307 181 6,860  
Catg D1 Exception Values: 3,858,611   4,077,222      
Total Test Values (4): 318,821,227   326,700,529      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 16,335,026

Confidence Interval Values (5)

State Lower Limit: 310,365,503 (State Test Value minus Margin of Error Percent)
Local Test Value: 318,821,227 (Within Confidence Interval)
State Upper Limit: 343,035,555 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 335,987,142 (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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