Timeline for Given a known population size and rate of occurrence, how do I calculate a reasonable sample size?
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 20, 2012 at 12:47 | history | edited | STW | CC BY-SA 3.0 |
added 589 characters in body
|
| Feb 18, 2012 at 20:46 | answer | added | jcb | timeline score: 1 | |
| Feb 18, 2012 at 5:34 | comment | added | Michelle | Are the data errors distributed randomly or is there some type of rule you could use based on the logic you know about how the geographic coordinates should relate to each other within a record? | |
| Feb 18, 2012 at 5:30 | history | tweeted | twitter.com/#!/StackStats/status/170742066425507841 | ||
| Feb 18, 2012 at 5:30 | comment | added | StasK | @STW, it is still not entirely clear what your objective is. I can try to guess, but... well... I am not a prophet. So: 1. Do you want the number $n$ so that you find at least one error with probability 80%? 2. Do you want $n$ so that there is an 80% probability that there are <i>no</i> errors in the remaining records? 3. If this is a cost optimization problem, you should cast is as such: write down your total cost (cost of automated check, manual check, and error), and figure out how to split the revision load between the computer and the human. | |
| Feb 18, 2012 at 4:19 | history | edited | Andy W |
deleted untagged tag
|
|
| Feb 18, 2012 at 1:06 | history | edited | gung - Reinstate Monica |
retagged for 'sample-size' you are asking how many to sample
|
|
| Feb 18, 2012 at 0:55 | comment | added | probabilityislogic | Are you asking about how trustworthy the automated procedure is? if so there isn't enough information i think. What you need is the number of correctly identified errors, the number of incorrectly identified errors, the number of correctly identified non-errors and the number of incorrectly idenified non-errors. I use the word "correct" in the sense of agreement with manual review. | |
| Feb 18, 2012 at 0:04 | history | migrated | from math.stackexchange.com (revisions) | ||
| Feb 17, 2012 at 18:13 | comment | added | STW | Thanks for the input, I wasn't aware of the stats.SE site--I've flagged it and hope the admins will move it over for me :) | |
| Feb 15, 2012 at 4:38 | comment | added | Mike Spivey | You might get a better answer at Cross Validated (stats.SE). | |
| Feb 15, 2012 at 3:21 | comment | added | STW | ...and as much as it sounds like it, this isn't actually homework. I'm importing geographic coordinates from addresses using a geocoding service; and need to find the balance of reasonable accuracy vs. labor cost | |
| Feb 15, 2012 at 3:19 | history | asked | STW | CC BY-SA 3.0 |