Bar Charts

Taking the scratchings from our Tally Sheet example and create a Bar Chart:

Colourful but I would question whether it adds anything to the Tally Sheet.  Totalling some of the figures and changing the axes gives a simpler chart and, quite often, simplicity means clearer:It is clear that visits from the boss is the most common single cause of interruptions, followed by answering the phone and comfort breaks.  Coffee breaks come next and we might want to look further at any causal link between the latter two!

As a footnote. if we try to present our data as a histogram we can get something like:

It’s not much use here as we’re not dealing with a continuous data series; I’ve included it here to show that it can be done and demonstrate that just because we can do something different with data it doesn’t mean we should.

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