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2009 Confidence Interval Detail
093/Grimes
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 2,018,720 0.9390 2,149,862 6 57 .004178547
A 2,205,980 0.9780 2,255,603 6 28 .003439136
A 1,421,920 0.9977 1,425,198 5 10 .002193651
A 2,562,060 1.0183 2,516,017 3 7 .001142550
D3 18,421,019 0.9988 18,443,151 20 666 .000281527
G1 84,259,083 1.0071 83,665,061 20 40 .009337155
Random Totals: 110,888,782   110,454,892 60 808  
Catg D1 Exception Values: 2,368,723   2,329,341      
Total Test Values (4): 113,257,505   112,784,233      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 5,639,212

Confidence Interval Values (5)

State Lower Limit: 107,145,021 (State Test Value minus Margin of Error Percent)
Local Test Value: 113,257,505 (Within Confidence Interval)
State Upper Limit: 118,423,445 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 118,710,712 (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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