Hello,

While reading about sum( ) I found out a few issues mainly with the documentation in the category of Statistics on version 11.5.0

sum( )

On syntax and examples

• There is no reference for sum(A, dim) even though it works as expected.

On See also

• There is a reference for itself sum

std( )

On syntax and examples

• There is no reference to std(A, dim) even though it works as expected.
• There are references for std(A, normalization) but it also works as std(A, dim-1, normalization). I include dim-1 because is zero indexed inside math.evaluate( ).

variance( )

On syntax and examples

• There is no reference to variance(A, dim) even though it works as expected.
• There are references for variance(A, normalization) but it also works as variance(A, dim-1, normalization). I include dim-1 because is zero indexed inside math.evaluate( ).

While doing these tests I got the errors that median(A, dim) and prod(A, dim) are not yet supported.

My main concern was finding that sum(A, dim) works but I hope the rest of the report can be useful.

To Reproduce
These were found inside the equation parser and the website documentation.