Not possible.
Maybe you could create a macro that you could assign to a shortcut key:
Option Explicit
Sub ShowStats()
Dim myRng As Range
Dim myMin As Variant
Dim myMax As Variant
Dim myAve As Variant
Dim mySum As Variant
Set myRng = Selection
With Application
myMin = .Min(myRng)
myMax = .Max(myRng)
myAve = .Average(myRng)
mySum = .Sum(myRng)
End With
If IsError(myMin) Then myMin = "--"
If IsError(myMax) Then myMax = "--"
If IsError(myAve) Then myAve = "--"
If IsError(mySum) Then mySum = "--"
MsgBox "Min: " & myMin & vbLf & _
"Max: " & myMax & vbLf & _
"Ave: " & myAve & vbLf & _
"Sum: " & mySum
End Sub
If you're new to macros, you may want to read David McRitchie's intro at:
http://www.mvps.org/dmcritchie/excel/getstarted.htm