between $0$ & $1,$ then sorted them smallest to largest.

Third, we collected $40$ samples from each city and displayed them.

Use Excel to perform sampling procedure exactly described in the excel file $($we worked in class$).(4$ marks$)$

Refer to Excel.

What makes this particular method a good choice? Note that "simplicity" alone is not a good reason $-$ that could lead to bias. $(3$ marks$)$