Labor Day

Quick Start for:

2009 Confidence Interval Detail
091/Grayson
091-918/Tom Bean ISD

Category Summary

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

Stratum
Variance
A 21,020,854 0.9743 21,575,340 14 361 .017192609
A 21,675,322 0.9342 23,202,015 13 226 .012271184
A 31,380,866 0.8778 35,749,449 14 236 .039573924
A 24,438,582 0.9823 24,878,939 13 124 .010774444
D3 46,049,272 0.9186 50,129,841 20 1,498 .239292753
Random Totals: 144,564,896   155,535,584 74 2,445  
Catg D1 Exception Values: 3,666,198   2,876,879      
Total Test Values (4): 148,231,094   158,412,463      

Margin of Error

Margin of Error Percent: 7.4024870
Margin of Error Value: 11,726,462

Confidence Interval Values (5)

State Lower Limit: 146,686,001 (State Test Value minus Margin of Error Percent)
Local Test Value: 148,231,094 (Within Confidence Interval)
State Upper Limit: 170,138,925 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 145,080,152 (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

Required Plug-ins