First we put all the names into a tally chart by going down the list one by one.
Then we put the tally numbers into frequency order.
It looked like this:A=6
J=5
B=3
D=3
H=3
P=3
S=3
T=3
M=2
N=2
w=2
Then we looked at the chart and we saw that there was a T missing,So we knew that Tessa was away.In the block graph the letters were: J
M
N
P
S
(BAR CHART IS ATACHED)