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2011 Confidence Interval Detail
170/Montgomery
093-905/Richards ISD

Category Summary

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

Stratum
Variance
A 2,223,570 0.9863 2,254,456 10 48 .008985255
A 2,339,280 0.9312 2,512,113 10 28 .006335126
A 2,514,870 0.9537 2,636,961 11 20 .002071721
A 2,252,420 0.9509 2,368,724 6 10 .001757986
D3 4,954,950 1.0364 4,780,924 17 304 .015774713
G1 4,587,559 0.9810 4,676,411 4 8 .000150373
Random Totals: 18,872,649   19,229,589 58 418  
Catg D1 Exception Values: 3,083,975   2,866,224      
Catg G1 Exception Values: 4,426,330   4,379,197      
Total Test Values (4): 26,382,954   26,475,010      

Margin of Error

Margin of Error Percent: 5.0000019
Margin of Error Value: 1,323,751

Confidence Interval Values (5)

State Lower Limit: 25,151,259 (State Test Value minus Margin of Error Percent)
Local Test Value: 26,382,954 (Within Confidence Interval)
State Upper Limit: 27,798,761 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 26,064,172 (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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