Can taller people's lungs hold more air than shorter people? - 3rd+ 4th

3rd and 4th collected height data and lung capacity data for their class.
They stored this in Excel.

Teacher introduced the scatter graph to the class and we predicted what way the scatter graph would look if taller people's lungs did in fact hold more air.












We then discussed how it would look if there was no relationship



Our graph looks like this (with height in cm on Y axis and lung capacity in ml on X axis)
We believe there is no relationship between height and lung capacity, but we notice that the smallest lung capacity is in some of the shorter people