                          a                   b
count                   5.0                 5.0
mean                    3.0                30.0
std      1.5811388300841898  15.811388300841896
min                     1.0                10.0
25%                     2.0                20.0
50%                     3.0                30.0
75%                     4.0                40.0
max                     5.0                50.0

[8 rows x 2 columns]