taxes Property Tax Assistance

2021 Confidence Interval Detail

Montgomery County
170-904/Willis ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 846,551,400 0.9096 930,685,356 75 5,865 0.022658373
A 936,577,230 0.9730 962,566,526 75 4,190 0.007541568
A 949,147,385 0.9503 998,787,104 74 2,773 0.037746894
A 939,276,650 0.9788 959,620,607 75 1,431 0.028428730
F1 96,916,870 0.8004 121,085,545 10 278 0.129452644
F1 118,486,082 0.8529 138,921,423 10 115 0.082318656
F1 129,046,801 1.0095 127,832,393 10 53 0.009048195
F1 147,923,920 1.0332 143,170,654 7 18 0.007562659
Random Totals: 4,163,926,338 4,382,669,608 336 14,723
CATG D1 EXCEPTION VALUES: 18,914,383 18,629,645
Total Test Values 4,182,840,721 4,401,299,253

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 220,064,963

Confidence Interval Values(5)

Local Test Value: 4,182,840,721 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 4,181,234,290 (State Test Value minus Margin of Error Percent)
State Upper Limit: 4,621,364,216 (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