Question

Martin earned the following scores on his last five tests.

Answer 1

Okay, to find this you have to subtract smallest from biggest, in this case it would be 98-78, so therefore the range would be 20.
Hope that helped!

Answer 2

I think it might be finding the average score... If so you need to add all the scores together and then divide by how many scores there are total... maybe... just try it see what you find