P – EC – OE6

You have to estimate a quantity consisting of a large number of items. What quantity would you like the referent to represent?

P – COA – OE8

Create a bar graph where the responses to the question are all quite different.

P – COA – OE9

Create a line plot where the responses to the question are all quite different.

Subscribe To Our Newsletter

Join our mailing list to receive the latest news and updates from Dr. David Costello.

You have successfully subscribed!