If I'm looking at existing statistical data, how do I try to find a correlation between two variables over time? Scatterplots have confused me, because they don't seem to reflect the passage of time, but just where x and y meet. Pearson's r doesn't seem to do it either w/r/t time. [more inside]
posted on Dec 11, 2007 - 13 answers

Looking for an Excel template to track children's time (billable hours) over a month. [more inside]
posted on Oct 9, 2007 - 6 answers

Excel Filter: How do I calculate average speed with a start and end time? [more inside]
posted on Jun 6, 2007 - 7 answers

Excel question on charting time - how to make it appear relative, not absolute? [more inside]
posted on Nov 6, 2006 - 5 answers

MS Excel: How do I convert a number representing seconds into minutes:seconds? [more inside]
posted on Apr 3, 2006 - 13 answers