8.Press Ctrl+1 to display the Format Cells dialog. On the Number tab, choose the
Custom category. A custom number format of yy would display 10 for 2010 and 15 for
2015. Instead, use a custom number format of yy":00". This causes Excel to display
10:00 for 2010 and 15:00 for 2015. This is fairly sneaky, eh?
As you can see in Figure 3.21, the chart now allocates one-sixth of the horizontal axis to
each hour. This is an improvement in accuracy over either of the charts in Figure 3.20. The
additional chart in Figure 3.21 uses a similar methodology to show the wait time for each
customer who enters the bank. If my bank offered 12-minute wait times, I ...
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