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2007 Confidence Interval Detail
109/Hill
109-910/Mount Calm ISD

Category Summary

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

Stratum
Variance
A 1,965,775 0.9402 2,090,805 12 69 .021503126
A 2,036,115 0.9508 2,141,476 10 42 .038306925
A 1,943,646 0.9066 2,143,885 10 28 .018314849
A 1,897,990 0.9445 2,009,518 10 17 .000865628
D3 12,131,861 0.9472 12,808,130 19 695 .109825258
Random Totals: 19,975,387   21,193,814 61 851  
Catg J Exception Values: 1,018,597   937,890      
Catg D1 Exception Values: 2,344,228   1,890,495      
Total Test Values (4): 23,338,212   24,022,199      

Margin of Error

Margin of Error Percent: 8.1047743
Margin of Error Value: 1,946,945

Confidence Interval Values (5)

State Lower Limit: 22,075,254 (State Test Value minus Margin of Error Percent)
Local Test Value: 23,338,212 (Within Confidence Interval)
State Upper Limit: 25,969,144 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 20,565,047 (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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