2011 Confidence Interval Detail
084/Galveston
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 | 481,517,312 | 0.9560 | 503,679,197 | 22 | 3,159 | .005869312 |
| A | 478,049,120 | 0.9241 | 517,313,191 | 19 | 1,972 | .002594360 |
| A | 476,847,072 | 0.9507 | 501,574,705 | 21 | 1,471 | .010495693 |
| A | 501,517,970 | 0.9322 | 537,993,961 | 20 | 922 | .014868389 |
| F1 | 32,218,055 | 1.0214 | 31,543,034 | 9 | 107 | .005893522 |
| F1 | 35,465,090 | 1.0618 | 33,400,914 | 8 | 49 | .023028333 |
| F1 | 35,376,200 | 1.0227 | 34,590,985 | 7 | 21 | .008628859 |
| F1 | 28,157,180 | 0.9136 | 30,820,031 | 4 | 6 | .017708179 |
| Random Totals: | 2,069,147,999 | 2,190,916,018 | 110 | 7,707 | ||
| Catg D1 Exception Values: | 152,841 | 223,753 | ||||
| Total Test Values (4): | 2,069,300,840 | 2,191,139,771 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 109,556,989 |
Confidence Interval Values (5)
| Local Test Value: | 2,069,300,840 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 2,081,582,782 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 2,300,696,760 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,097,313,623 | (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