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Galveston County
2020 Confidence Interval Detail
Galveston County
084-911/Friendswood ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 849,373,264 | 0.9221 | 921,129,231 | 28 | 3,554 | 0.033404978 |
| A | 797,042,363 | 0.9706 | 821,185,208 | 22 | 2,244 | 0.012279525 |
| A | 907,203,202 | 1.0077 | 900,271,114 | 23 | 1,924 | 0.007280073 |
| A | 1,066,543,881 | 1.0035 | 1,062,823,997 | 23 | 1,383 | 0.007528235 |
| Random Totals: | 3,620,162,710 | 3,705,409,550 | 96 | 9,105 | ||
| CATG D1 EXCEPTION VALUES: | 148,420 | 141,515 | ||||
| Total Test Values | 3,620,311,130 | 3,705,551,065 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 185,277,553 |
Confidence Interval Values(5)
| Local Test Value: | 3,620,311,130 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 3,520,273,512 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 3,890,828,618 | (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