Answer Posted / name is no need

differences:
1.The means procedure provides the simple statistics like
N,min,max,mean ans standard deviation.

The summary procedure provides the values _type_,_freq_ and
_stat_.

2.The means procedure gives the ouput/list report by
default.
The summary procedure provides a data set instead of
output/list report
3.proc means syntax:
proc means data=data set name;
class<varible declaration>;
var<variable declaration>;
run;
Proc summary syntax:
proc summary data=data set name;
output out=<new data set name>;
class<variable declaration>;
var<variable declaration>;
run;
4.if we use Noprint and output out=.. options in proc means
it should exactly equals to proc summary.

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