Q:

How to give axes label to a histogram

I plotted a histogram and I used AxesLabel for labeling X axis and Y axis But it went wrong.
How to do it?. 
Xarray = A @@@ Tuples[Range[0, 9], 3];

M = RandomSample[Xarray, 7]

Table[energies =  RandomVariate[ExponentialDistribution[1.5], {Length@M}];

Total[energies/7], {i, 1000}];

Histogram[%, AxesLabel \[RightArrow] {"Average energy", "Number of times"}]

A:

\[Rule] is not the same as \[RightArrow]
Compare  this (it works):
 r = Table[Total[RandomVariate[ExponentialDistribution[1.5], {7}]/7], {i, 1000}];

 Histogram[r, AxesLabel \[Rule] {"Average energy", "Number of times"}]

With this (does not work)
 Histogram[r, AxesLabel \[RightArrow] {"Average energy", "Number of times"}]

\[Rule] is usually entered as two chars "->"

