Thirty Students in the School of Business Were Asked What

Thirty students in the School of Business were asked what their majors were.The following represents their responses (M = Management; A = Accounting; E = Economics; O = Others). $$\begin{array} { l l l l l l l l l l } \mathrm { A } & \mathrm { M } & \mathrm { M } & \mathrm { A } & \mathrm { M } & \mathrm { M } & \mathrm { E } & \mathrm { M } & \mathrm { O } & \mathrm { A } \\\mathrm { E } & \mathrm { E } & \mathrm { M } & \mathrm { A } & \mathrm { O } & \mathrm { E } & \mathrm { M } & \mathrm { A } & \mathrm { M } & \mathrm { A } \\\mathrm { M } & \mathrm { A } & \mathrm { O } & \mathrm { A } & \mathrm { M } & \mathrm { E } & \mathrm { E } & \mathrm { M } & \mathrm { A } & \mathrm { M }\end{array}$$ ​
a.
Construct a frequency distribution and a bar chart.
b.
Construct a relative frequency distribution and a pie chart.