Quick Start for:

2010 Confidence Interval Detail
091/Grayson
091-908/Van Alstyne ISD

Category Summary

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

Stratum
Variance
A 61,290,160 1.0122 60,551,433 19 694 .003345532
A 63,049,679 1.0284 61,308,517 20 445 .001593529
A 56,087,761 0.9980 56,200,161 16 302 .001464456
A 58,801,807 0.9726 60,458,366 17 204 .008220596
D3 75,397,675 1.0558 71,412,839 15 1,697 .027198761
F1 7,551,328 0.6932 10,893,433 9 63 .371254970
F1 8,363,742 0.9700 8,622,414 10 23 .020222197
F1 9,115,260 0.7461 12,217,209 6 12 .111935375
F1 9,312,765 0.9345 9,965,506 4 7 .001716624
Random Totals: 348,970,177   351,629,878 116 3,447  
Catg J Exception Values: 19,221,686   22,556,694      
Catg D1 Exception Values: 3,568,990   2,713,734      
Total Test Values (4): 371,760,853   376,900,306      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 18,845,015

Confidence Interval Values (5)

State Lower Limit: 358,055,291 (State Test Value minus Margin of Error Percent)
Local Test Value: 371,760,853 (Within Confidence Interval)
State Upper Limit: 395,745,321 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 378,709,314 (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