# Number of responses above a threshold after considering survey error

#### jakeharry

##### New Member
I am interested in how many people in my survey of people earn between $50,000 and$54,999. I construct a paper survey which asks for income in $5,000 bands. 200 people respond that they earn between$45,000 and $49,999.99 20 people respond that they earn between$50,000 and $54,999.99 No-one in my survey earns more than this. I also know (from other work) that there is a 10% chance that any person gets their income wrong by one band – i.e. it will be$5,000 too high or too low.

#### hlsmith

##### Less is more. Stay pure. Stay poor.
I haven't seen this anywhere, but it is similar to sensitivity analysis. Sensitivity analysis is a set of procedures conduct at the end of a study which attempt to account for measurement or selection bias along with confounding. There is a book by Fox, Lash, and Fink that discusses how to correct some statistics due to these threats.

http://www.springer.com/us/book/9780387879604