Izpisua's inch

 Student's from 4ºESO B have been working on a proposal about the length of Izpisua's inch.

It is well known that an inch is exactly 25,4 mm, but we wanted to study if our students' inch is similar to the official measurement.

We did the following:

They measured their own inch using a caliper in their physics class (see the photos below)

Then they shared their data in a spreadsheet and made  statistical calculations.

As a result their proposal is that Izisua's inch should be should be 20 mm because:

It is very close to the median (19,5mm) and the mean (19,8 mm)

It is the mode. (20mm)

It is in between the lower and the higher quartile. (17,5mm – 21mm)

They also studied if there were correlation between students' high  and their inch, the conclussion was that there isn't statistical relationship because the correlation was 0,27 and it is low.

They have learnt in this activity that different subjects such as maths and physics are linked .