The default number of histogram buckets is 10, but you can easily change
On the right side of Dashboard Designer, click
Settings in the VISUALmenu.
In the Settings menu, click Basic.
Under Basic, adjust the selector for the Bucket
The following image contrasts the appearance of a histogram with 10 buckets and a histogram
with 20 buckets. Notice that as the number of buckets doubles, the range of values covered
by each bucket is reduced by half.