How to plot a BAR chart

How to plot a BAR chart with the following data

X: 28-30 22-27 13-21 8-12 4-7

Y: 3 16 70 8 3

Answer 1

[Azzi Abdelmalek]

X= {'28-30' '22-27' '13-21' '8-12' '4-7'}
Y=[ 3 16 70 8 3]
bar(Y)
set(gca,'xticklabel',X)