2009 Confidence Interval Detail
057/Dallas
057-919/Sunnyvale ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 107,350,420 | 0.8761 | 122,532,154 | 8 | 518 | .036407182 |
| A | 115,923,810 | 0.9824 | 118,000,621 | 16 | 424 | .002435520 |
| A | 102,994,990 | 0.9531 | 108,063,152 | 15 | 297 | .010320760 |
| A | 105,892,100 | 0.9641 | 109,835,183 | 8 | 208 | .020471547 |
| C | 7,698,970 | 0.9060 | 8,497,759 | 9 | 155 | .029210445 |
| C | 8,630,010 | 1.0012 | 8,619,666 | 8 | 102 | .012101234 |
| C | 20,918,390 | 0.9951 | 21,021,395 | 6 | 109 | .006995736 |
| C | 11,652,190 | 1.0419 | 11,183,597 | 4 | 10 | .018350121 |
| F1 | 12,069,300 | 0.9502 | 12,701,852 | 6 | 32 | .026256890 |
| F1 | 9,650,060 | 0.9702 | 9,946,465 | 5 | 12 | .005499049 |
| F1 | 12,055,930 | 0.9401 | 12,824,093 | 4 | 7 | .003915019 |
| L1 | 7,251,760 | 0.9927 | 7,305,087 | 7 | 23 | .007683231 |
| L1 | 10,765,570 | 1.0151 | 10,605,428 | 3 | 8 | .000771435 |
| Random Totals: | 532,853,500 | 561,136,452 | 99 | 1,905 | ||
| Catg D1 Exception Values: | 583,851 | 657,079 | ||||
| Catg F1 Exception Values: | 28,954,750 | 30,041,563 | ||||
| Catg L1 Exception Values: | 84,948,240 | 83,858,138 | ||||
| Total Test Values (4): | 647,340,341 | 675,693,232 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 33,784,662 |
Confidence Interval Values (5)
| State Lower Limit: | 641,908,570 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 647,340,341 | (Within Confidence Interval) |
| State Upper Limit: | 709,477,894 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 738,479,056 | (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