Can you display this data with a stem and leaf plot, explain why or why not.

I think the answer would be no.

Stem-and-leaf plots looks like this:

Stem | Leaf
       1 | 2 2 3 6 6
      2 | 2

The stem represents the number in the tens place and every number in the leaf is the number in the ones place and each one is matched up with the stem. So for the 1 stem there would be 12 12 13 16 16. Make sense?

They wouldn't work with things like days of the week because they are more for showing a data set. 

3cm and 6 and 9 cm that a possibility of that question