2008 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 | 431,303,736 | 0.9317 | 462,921,258 | 16 | 2,933 | .003858087 |
| A | 443,784,736 | 0.9372 | 473,521,912 | 15 | 1,919 | .002239647 |
| A | 468,062,880 | 0.9672 | 483,935,980 | 15 | 1,516 | .008868345 |
| A | 473,577,890 | 0.9668 | 489,840,598 | 15 | 898 | .010306267 |
| F1 | 134,267,797 | 1.0118 | 132,701,914 | 11 | 263 | .015521123 |
| Random Totals: | 1,950,997,039 | 2,042,921,662 | 72 | 7,529 | ||
| Catg D1 Exception Values: | 208,457 | 280,126 | ||||
| Total Test Values (4): | 1,951,205,496 | 2,043,201,788 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 102,160,089 |
Confidence Interval Values (5)
| State Lower Limit: | 1,941,041,699 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 1,951,205,496 | (Within Confidence Interval) |
| State Upper Limit: | 2,145,361,877 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 1,976,441,686 | (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