1. Participants were assigned to one of three groups in order to study short-term memory with three different types of items: words, non-words, and numbers. Participants were shown a list of items that match their group type, and then were given a test to see how many items they could remember. The data is listed below. The researcher wants to know if there is a significant difference among any of the group means.
Words
Non-words
Numbers
8
5
6
9
4
7
10
3
>=8.13
>=4.38
>=6.13