Bernard Liengme wrote...
You may need to buy SPSS!

Why *buy* anything? R is very good and, with the contributed add-on
packages, fairly broad. Gretl, also free, would also be adequate for
this. I can understand why some companies may want to shell out real
$$$ for server or mainframe-based stats packages, but I can't
understand why individuals would spend close to or more than USD1000
for stats software.