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2011 Confidence Interval Detail
040/Cochran
040-901/Morton ISD

Category Summary

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

Stratum
Variance
A 4,189,957 0.9220 4,544,422 11 332 .007536156
A 4,164,691 0.9242 4,506,266 10 149 .002932106
A 4,149,169 0.9276 4,473,015 10 88 .000887834
A 4,093,455 0.9727 4,208,343 10 53 .002282644
D3 6,696,687 0.9810 6,826,388 15 1,208 .001696800
G1 4,662,726 0.9818 4,749,161 7 25 .003232573
L1 2,043,589 1.0038 2,035,853 10 47 .001808738
L1 2,401,699 0.9979 2,406,753 5 7 .001204573
Random Totals: 32,401,973   33,750,201 78 1,909  
Catg D1 Exception Values: 17,040,936   18,222,892      
Catg G1 Exception Values: 7,017,807   6,872,305      
Total Test Values (4): 56,460,716   58,845,398      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 2,942,270

Confidence Interval Values (5)

State Lower Limit: 55,903,128 (State Test Value minus Margin of Error Percent)
Local Test Value: 56,460,716 (Within Confidence Interval)
State Upper Limit: 61,787,668 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 59,508,064 (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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