Ksharp has posted one possible solution. Another solution (if you want a "grouped" report (such as without name), would be to take her TABULATE code and remove the "*name" from the TABLE statement.
Otherwise, you can also achieve a grouped or summary report with PROC REPORT, as well, consider the program below. In this program, the variables SEX and AGE are group variables and so the "detailed" observations will collapse into groups of unique ages within each sex value. Then the Weight variable is used to get the N statistic to count the observations in each SEX/AGE group and the HEIGHT variable is used to get the SUM of HEIGHTS (not very meaningful, but it is only meant to show the use of the SUM statistic).
proc report data=sashelp.class nowd;
column sex age weight height;
define sex / group;
define age / group;
define height / sum;
define weight / n 'Count';
rbreak after / summarize;