Best Dataset Ever

This is an end-of-semester thing that we’ve been looking forward to.  Back in mid-October, I thought it would be fun to record our sleep and wakeup times.  We started on October 14th, and here are the results from calculating hours slept.  I think we have a lot less than the average number of all-nighters for college students.

You can download the dataset (csv format) here.

Note: the hours slept are calculated for the night before, e.g. Sunday values correspond to hours slept Saturday night through Sunday morning.

Summary (hours):

As you can see, Danny, Duncan, and Tom have left-skewed distributions (the mean is less than the median) whereas I’m right-skewed.  I have the highest mean sleep time and the lowest standard deviation.  Tom has the highest standard deviation, and Duncan has the lowest mean sleep time.  Graph:

Days of the week:

We were also curious about our sleep patterns during the week.  Tom was usually very well rested on Tuesdays.  Graph:

Correlation Matrix:

Unsurprisingly, I am not very correlated with the others.  Duncan and Tom have the highest correlation.

My hours:

My variance increased over the semester.  Graph:

Danny:

Thanksgiving break meant a lot of sleep for Danny.  Graph:

Duncan:

I bet you can tell when Duncan had an astronomy lab write-up.  Graph:

Tom:

The wild roller coaster ride that is Tom’s sleep schedule.  Graph:

All of us: