taxes Property Tax Assistance

2018 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 52,905,333 0.7798 67,844,746 8 948 0.043578835
A 50,253,313 0.8016 62,691,259 9 488 0.050016126
A 56,151,657 0.9640 58,248,607 18 338 0.015468234
A 126,544,255 0.9893 127,912,923 31 503 0.013799998
E 71,513,913 0.9892 72,294,696 10 600 0.014531655
F1 4,999,370 0.7157 6,985,287 9 45 0.080716798
F1 3,896,280 0.7781 5,007,428 8 16 0.036803174
F1 7,203,420 0.7845 9,182,180 5 14 0.027947988
Random Totals: 373,467,541 410,167,126 98 2,952
CATG D1 EXCEPTION VALUES: 8,344,404 6,343,081
CATG F1 EXCEPTION VALUES: 1,582,330 1,850,580
Total Test Values(2) 383,394,275 418,360,787

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 20,918,039

Confidence Interval Values(5)

Local Test Value: 383,394,275 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 397,442,748 (State Test Value minus Margin of Error Percent)
State Upper Limit: 439,278,826 (State Test Value plus Margin of Error Percent)

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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values