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2008 Confidence Interval Detail
061/Denton
057-903/Carrollton-Farmers Branch ISD

Category Summary

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

Stratum
Variance
A 1,963,568,837 1.0237 1,918,109,639 23 11,869 .004291066
B 696,496,529 1.0274 677,921,480 11 236 .013278268
F1 325,328,840 1.0288 316,221,656 11 188 .027415531
Random Totals: 2,985,394,206   2,912,252,775 45 12,293  
Total Test Values (4): 2,985,394,206   2,912,252,775      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 145,612,639

Confidence Interval Values (5)

State Lower Limit: 2,766,640,136 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,985,394,206 (Within Confidence Interval)
State Upper Limit: 3,057,865,414 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,939,848,458 (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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