2008 Confidence Interval Detail
091/Grayson
091-905/Howe ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 28,891,697 | 0.9184 | 31,458,729 | 9 | 435 | .018788596 |
| A | 30,379,065 | 1.0171 | 29,868,317 | 10 | 295 | .010713012 |
| A | 29,937,822 | 0.9643 | 31,046,170 | 7 | 220 | .006642702 |
| A | 28,552,278 | 1.0079 | 28,328,483 | 7 | 148 | .001321802 |
| D3 | 44,026,082 | 0.8950 | 49,191,153 | 10 | 1,328 | .048229433 |
| F1 | 2,924,932 | 0.8567 | 3,414,185 | 7 | 26 | .054344954 |
| F1 | 4,270,942 | 0.9417 | 4,535,353 | 7 | 12 | .242448988 |
| F1 | 2,739,879 | 0.8052 | 3,402,731 | 5 | 5 | .039462904 |
| Random Totals: | 171,722,697 | 181,245,121 | 62 | 2,469 | ||
| Catg D1 Exception Values: | 6,629,081 | 5,223,981 | ||||
| Catg F1 Exception Values: | 2,751,184 | 2,908,345 | ||||
| Total Test Values (4): | 181,102,962 | 189,377,447 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 9,468,872 |
Confidence Interval Values (5)
| State Lower Limit: | 179,908,575 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 181,102,962 | (Within Confidence Interval) |
| State Upper Limit: | 198,846,319 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 185,724,246 | (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