Day 1 2 3 4 5 6 7 8

Visitors 60 120 240 180 180 60 300 240

Shark Size
Mass (kg) 10 30 50 70 70 80 80 90 100 110
Length (cm) 50 150 175 175 200 200 225 300 325 350

What type of graph is an appropriate representation of the shark size data?
a line graph
b scatter plot