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Galveston County
2019 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 | 732,830,987 | 0.8854 | 827,683,518 | 50 | 3363 | 0.022763058 |
| A | 767,246,928 | 0.9403 | 815,959,723 | 49 | 2258 | 0.005285892 |
| A | 779,352,673 | 0.9509 | 819,594,777 | 51 | 1743 | 0.005037077 |
| A | 919,483,149 | 0.9200 | 999,438,205 | 52 | 1283 | 0.034335596 |
| Random Totals: | 3,198,913,737 | 3,462,676,223 | 202 | 8,647 | ||
| CATG D1 EXCEPTION VALUES: | 85,910 | 74,981 | ||||
| Total Test Values(1) | 3,198,999,647 | 3,462,751,204 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 173,137,560 |
Confidence Interval Values(5)
| Local Test Value: | 3,198,999,647 | OUTSIDE CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 3,289,613,644 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 3,635,888,764 | (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