Frequency distribution

[steve]

Machine Speed Bins
A 10 0
A 20 5
B 30 10
D 40 15
E 50 More
A 60
B 70
F 80

How can I do a frequency distribution by Machine ?

I know how to use "frequency" function but I need to segregate the machine
first . How can I do a better way without segregating the data

 

[Teethless mama]

=FREQUENCY(IF($A$2:$A$9="A",$B$2:$B$9),C2)

ctrl+shift+enter, not just enter