Holiday Hours
Quick Start for:

2006 Confidence Interval Detail
070/Ellis
070-905/Ferris ISD

Category Summary

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

Stratum
Variance
A 44,833,852 0.9642 46,498,498 17 687 .055015083
A 44,778,028 1.0290 43,516,062 19 409 .017614020
A 44,911,595 1.0447 42,989,944 23 295 .009445749
A 44,634,240 1.0523 42,415,889 17 200 .004199177
D3 42,497,889 1.1240 37,809,510 20 1,615 .569131192
F1 3,455,983 0.9514 3,632,524 10 45 .026586104
F1 3,228,953 0.8558 3,773,023 9 18 .031346115
F1 3,718,553 0.8878 4,188,503 9 10 .047528347
Random Totals: 232,059,093   224,823,953 124 3,279  
Catg D1 Exception Values: 4,924,480   5,632,657      
Catg F1 Exception Values: 6,086,020   6,922,309      
Total Test Values (4): 243,069,593   237,378,919      

Margin of Error

Margin of Error Percent: 5.8889425
Margin of Error Value: 13,979,108

Confidence Interval Values (5)

State Lower Limit: 223,399,811 (State Test Value minus Margin of Error Percent)
Local Test Value: 243,069,593 (Within Confidence Interval)
State Upper Limit: 251,358,027 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 273,772,621 (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