averaging values if a certain name is next to it

I am trying to figure out how I could find an average of values if and only if a certain name is next to it.

example.xlsx

in the example text, I want to find the average of all the cells that have "bob" in column B. I want it to be the entire column and not just part of it. I have been looking around but I have not found what I was looking for.

Add the numbers corresponding to bob

=SUMIF(B1:B12,"bob",A1:A12)

Count the number of times bob appears

=COUNTIF(B1:B12,"bob")

Calculate bobs average

=SUMIF(B1:B12,"bob",A1:A12)/COUNTIF(B1:B12,"bob")