2009 Confidence Interval Detail
070/Ellis
070-908/Midlothian ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 409,358,250 | 0.9842 | 415,929,943 | 66 | 3,335 | .021177998 |
| A | 405,639,996 | 0.9915 | 409,117,495 | 55 | 2,297 | .002480122 |
| A | 416,939,394 | 0.9879 | 422,046,152 | 50 | 1,705 | .002749120 |
| A | 396,236,143 | 1.0220 | 387,706,598 | 24 | 1,022 | .007854824 |
| F1 | 30,100,623 | 0.9798 | 30,721,191 | 9 | 138 | .001728929 |
| F1 | 26,731,739 | 0.9993 | 26,750,464 | 7 | 45 | .007003190 |
| F1 | 43,132,671 | 1.0045 | 42,939,444 | 9 | 28 | .008551744 |
| F1 | 25,619,330 | 0.9560 | 26,798,462 | 4 | 4 | .012297548 |
| Random Totals: | 1,753,758,146 | 1,762,009,749 | 224 | 8,574 | ||
| Catg D1 Exception Values: | 5,029,233 | 3,739,905 | ||||
| Total Test Values (4): | 1,758,787,379 | 1,765,749,654 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 88,287,483 |
Confidence Interval Values (5)
| State Lower Limit: | 1,677,462,171 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 1,758,787,379 | (Within Confidence Interval) |
| State Upper Limit: | 1,854,037,137 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,773,739,708 | (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