Sorry but...
Cumulative frequency: depends on context. More like 'sum of sums'.
Peer Review: ... Yeah, okay.
Distribution curve: technically a line graph but can also represent stacked trend values over time so somewhat more complex.
Margin of error: Of course it matters if it's wrong, just a measure of how much. Normally dictated by context and contributory factors. Your bank account has a zero margin of error. However the local bus timetable will. That's life.

And finally, data cleansing IS NOT correcting typos in Excel. I'm a data architect and DBA and this one really boils my piss. Go away and read some books on database administration, or Google 'Big Data' if you're lazy. Might as well denounce the discipline of mechanical engineering as being able to hold a spanner the right way up.
(hangableautobulb is an anagram of the best album ever, on, Fri 24 Feb 2012, 22:43, 1 reply)

I bet you're a barrel of laughs
When they play bullshit bingo too.
(andythepieman Is surfing the waves of indifference on, Tue 28 Feb 2012, 15:31, closed)