Measuring carefully

Sometimes even grown ups don't measure things properly and check their measurements. For instance recently when the SNCF wanted new trains, they didn't measure the platforms carefully:


So, we're going to try and make sure we measure carefully and check our measurements!

We're measuring various bones in our body, particularly the humerus and the femur, measuring twice to be make sure!

Next day...

To get better quality data, we've got eight different people to measure our humerus today.

Here's a chart of our humerus length and height:

Do you think there's a link between the two? Would it make sense to draw a line through the points or are they too scattered? Where would you put the line?